• Title, Summary, Keyword: Cellularity

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Cellularity of a Larger Class of Diagram Algebras

  • BI, N. KARIMILLA
    • Kyungpook Mathematical Journal
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    • v.55 no.4
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    • pp.837-858
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    • 2015
  • In this paper, we realize the algebra of ${\mathbb{Z}}_2$ relations, signed partition algebras and partition algebras as tabular algebras and prove the cellularity of these algebras using the method of [2]. Using the results of Graham and Lehrer in [1], we give the modular representations of the algebra of ${\mathbb{Z}}_2$-relations, signed partition algebras and partition algebras.

Effects of Chitosan on the Normal and Cyclophosphamide-suppressed Primary Humoral Immune Response in Mice (Chitosan이 마우스의 정상 및 cyclophosphamide로 억제된 일차 체액성 면역반응에 미치는 영향)

  • 표명윤;곽영희
    • YAKHAK HOEJI
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    • v.46 no.2
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    • pp.120-123
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    • 2002
  • In order to investigate the effects of chitosan on the normal and cyclophosphamide (CY)-suppressed primary humoral immune response in mice, chitosan was orally administered alone (single dose of 62.5, 250 mg/kg) or with CY (20 mg/kg, i.p.) to female ICR mice on the 2nd day before or after immunization with SRBC-antigen. When chitosan alone was administered before antigenic challenge, splenic IgM plaque forming cells (PFC) and splenic cellularity were slightly increased and serum IgM was not changed when compared with control group. However, chitosan significantly enhanced PFC, serum IgM and splenic cellularity when administered after antigenic challenge. The PFC numbers, serum IgM and splenic cellularity were significantly decreased by the treatment of CY, whereas those values were slightly increased by the concomitant treament of CY and chitosan when compared with CY alone-administration. These results indicate that chitosan is able to increase normal humoral immunity (HI) and to slightly inhibit the suppressive effects of CY on HI.

Cytologic Findings of Breast Carcinoma in Fine Needle Aspiration - Comparison with Histologic Findings, Stage and Lymph Node Metastasis - (유방암 세침흡인의 세포학적 소견 - 세포학적 소견과 조직학적 소견, 병기 및 림프절 전이 상태와의 비교 -)

  • Chang, Hee-Jin;Kim, Duck-Hwan;Paeng, Sung-Sook;Yang, Sung-Eun;Sohn, Jin-Hee;Suh, Jung-Il;Park, Hyo-Sook
    • The Korean Journal of Cytopathology
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    • v.6 no.1
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    • pp.18-26
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    • 1995
  • In order to compare cytologic findings ol breast carcinoma in fine needle aspiration cytology (FANC) with histologic findings and prognostic factors including histologic grading, lymph node metastasis and stage, 79 cases of infiltrating ductal carcinoma diagnosed by FANC and confirmed by histology were analysed. We especially attempted to col relate nuclear grade, cellularity and smear pattern with histologic grade, type, status of lymph node metastasis and stage. The results are as fellows. 1. High nuclear grade was correlated with high histologic grade, lymph node metastasis and advanced stage. 2. Individual cell pattern was more frequently identified in high histologic grade and scirrhous or solid-tubular type than in low histolgic grade and papillotubular type. 3. Cellularity increased with higher histologic grade and lymph node metastsis. However cellularity was low in scirrhous type. 4. There is no relationship between nuclear grade and histologic type, between smear pattern and lymph node metastasis or stage, and between cellularity and stage. These results suggest that cytologic findings of breast carcinoma such as nuclear grade, cellularity and smear pattern are indicative of histologic findings in relation to histolgic grade and type. Especially, nuclear grade of FANC may yield valuable prognostic information.

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Bone Marrow Scans with Colloidal $^{198}Au$ (교질성(膠質性) $^{198}Au$을 사용(使用)한 골수주사(骨髓走査))

  • Chung, Seung-Soo;Whang, Kee-Suk
    • The Korean Journal of Nuclear Medicine
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    • v.7 no.1
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    • pp.39-43
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    • 1973
  • The bone marrow scans with colloidal $^{198}Au$ were performed on 33 cases with hematologically normal patients and patients with various blood dyscrasia. Bone marrow aspirations were done at iliac crest in all cases but one. A correlation between the scan findings and an erythroid cellularity was evaluated. The following results were obtained. 1) Out of 33 cases, 23 (about 70%) showed a correlation between $^{198}Au$ marrow uptakes on the scans and the erythroid cellularity. 2) The diseases in which no correlation existed between $^{198}Au$ uptake and erythroid cellularity were aplastic anemia, acute leukemia and chronic myelogenous leukemia.

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Propagation speed of wrinkled premixed flames within stoichiometric hydrogen-air mixtures under standard temperature and pressure

  • Sun, Zuo-Yu;Li, Guo-Xiu
    • The Korean Journal of Chemical Engineering
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    • v.34 no.6
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    • pp.1846-1857
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    • 2017
  • To explore the influence mechanism of initial turbulence on propagation speed of wrinkled flames, the turbulent combustion behavior of wrinkled stoichiometric hydrogen premixed flames was studied in a spherical fan-stirred closed vessel under standard temperature and pressure. The variations on flame structure were first observed; turbulent flames first were distorted and then became cellular, and both first and second critical flame radii of cellularity declined with a increased rate as turbulent intensity rose. Then, the variations of stretch effects were compared to laminar flame; the global stretch rate on turbulent flame at a same flame size was raised while the enhancement extent was obviously enlarged with the increase of initial turbulent intensity and/or the growth of flame size. Finally, the variation regulations of propagation speed induced by varying turbulent intensity were analyzed; the nexus between propagation speed and initial turbulence was discussed with the considerations of cellularity phenomenon and stretch effects.

Evaluation of the Manual Method of Liquid-Based Uterine Cervicovaginal Cytology - By The Manual Method Based on $SurePath^{TM}$ Methodology (자궁경부 액상세포검사의 수기 검사법에 대한 고찰 - $SurePath^{TM}$ 검사법을 준용한 수기 검사법으로 -)

  • Park, Jong-Myoung;Jang, Jin-Wook;Lim, So-Yeo;Suh, In-Soo;Lee, Jong-Gi
    • The Korean Journal of Cytopathology
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    • v.15 no.2
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    • pp.86-91
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    • 2004
  • Liquid-Based Uterine Cervicovaginal Cytology is known to be a sensitive and effective screening method for cervical neoplasm $MonoPrep^{TM},\;ThinPrep^{TM},\;and\;SurePath^{TM}$ methods have been recently used as Liquid-Based Uterine Cervicovaginal Cytology techniques, and the $SurePath^{TM}$ method has been used in Sung-Yoon Reference Laboratory since 2003. The goal of Liquid-Based Uterine Cervicovaginal Cytology is to separate cervical epithelial cells from non-target cells, red blood cells and neutrophils. This report describes a study which evaluated cellularity, stainablilty, and cellular changes of epithelial cels in samples processed using a manual technique as compared to samples processed using $SurePath^{TM}$ automated method. The samples processed by means of a manual technique contained a cellularity of epithelial cells similar to that of the samples processed using the $SurePath^{TM}$ automated method. In addition, we compared variable density gradient reagents, including dextran, dextrose, and sucrose, to $SurePath^{TM}$ gradient media in order to evaluate cell fractionation and cellularity of epithelial cells. 10% dextran of gradient media shows good fractionation. The samples processed with 10% dextran demonstrated sufficient cellularity of epithelial cells and shows the fewest cellular changes. In conclusion, using a manual technique on these samples is easier to read than those results obtained using the $SurePath^{TM}$ automated method.

Immunopathological studies in mice exposed to bisphenol A (마우스에서 bisphenol A 노출로 인한 면역병리학적 연구)

  • 변정아;표명운
    • Environmental Mutagens and Carcinogens
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    • v.22 no.4
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    • pp.324-330
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    • 2002
  • Bisphenol A (BPA) is a monomer widely used in the manufacturing polycarbonate plastics or epoxy resin, and xenobiotics recently known as endocrine disrupting chemical. In this paper, to assess the effects of bisphenol A on immunopathological parameters (body weight, organ weight, hematological parameters, cellularity and surface marker) in mice, ICR female mice were orally exposed to BPA dissolved in olive oil as concentrations of 100, 500, 1000 ㎎/㎏/day b.w. 5 days a week for 30 days (subacute exposure). Liver - and kidney weight was significantly increased as dose-dependent manner, but body- , spleen- and thymus- weight didn't changed. In hematological parameters, WBC and MCHC were lowered but HCT and MCV were siginificantly enhanced. There was no significant differences in peritoneal macrophages number of the mice exposed to BPA. However, number of splenocytes of spleen, CD3/sup +/ and CD4/sup +/ cell in splenocytes, CD4/sup +/ and CD8/sup +/ cell in thymocytes were decreased at the mice subacutely exposed to BPA. In addition, BPA decreased expression of B7-1 and B7-2 on macrophages. Therefore, these results showed BPA may affect hematological parameters, cellularity and surface marker of immunocytes.

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Comparision of Effectiveness between the $ThinPrep^{(R)}$ and the Cytospin Preparations of the Repeated Urine Cytology (소변검사의 재검 시 세포원심분리법과 액상세포검사 $ThinPrep^{(R)}$의 효율성에 관한 비교)

  • Kim, Hyun-Kyung;Pyo, Ju-Yeon;Lee, Yoon-Hee;Jung, Woo-Hee;Kim, Se-Hoon;Hong, Soon-Won
    • The Korean Journal of Cytopathology
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    • v.18 no.1
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    • pp.55-61
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    • 2007
  • Once diagnosed as "cell paucity"or "atypia" by the cytospin (CS) preparation, this CS preparation does not secure a precise diagnosis by repeated testing alone. Although the ThinPrep (TP) preparation is acknowledged to show increased cellularity, performing the screening tests for the cases that have enough cellularity, according to CS, raises issues for the cost-effectiveness. To obtain a more precise diagnosis through increasing the cellularity by performing TP, we selected the cases that were diagnosed as "cell paucity" or "atypia" by CS, but they required a more precise diagnosis, and the samples were processed via both CS and TP to compare the results. 11 patients diagnosed as "cell paucity" and 22 patients diagnosed as "atypia" by CS participated in this study. When the detection rate of atypical cells in both preparations with repeated urine cytology was compared, the overall detection rate of TP (16cases, 48.5%) was superior than that of CS (11cases, 33.3%), with statistical significance. The cellularity of both preparations was compared on repeated urine cytology; the general cellularity of TP (29cases, 87.9%) was higher than that of CS (20cases, 60.6%), but there was no statistical significance. Particularly, we repeated the TP for the 1 case that was diagnosed as "atypia" and we performed polyoma virus immunohistochemical staining, which confirmed polyoma virus. In conclusion, we can avoid obtaining negative diagnosis from cases with uncertain "atypia" or "cell paucity" by performing repeated TP testing.

Fine Needle Aspiration Cytology of Two Cases of Leiomyosarcoma (평활근육종의 세침 흡인 세포학적 소견 -2예 보고-)

  • Ha, Chang-Won;Myong, Na-Hye;Cho, Kyung-Ja;Jang, Ja-June
    • The Korean Journal of Cytopathology
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    • v.1 no.2
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    • pp.147-151
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    • 1990
  • Leiomyosarcoma of the soft tissue is a well-defined and characteristic entity histologically, but cytomorphological studes are lacking. A correlaive cytological study of 2 cases of leiomyosarcoma is presented. The smears from case 1 were rich in tumor cells and most cells were arranged in large sheets or clusters. The cells showed round to oval nuclei containing fine chromatin and small promiment nucleoli. The smears from case 2 were moderate in cellularity with loose clusters or isolated cells. The characteristic blunt-ended and cigar-shaped nuclei containing coarse chromatin and prominent nucleoli were identified in case 2. Nuclear atypia, prominent nucleoli and high cellularity permit diagnosis of malignancy, although the atypia is generally less pronounced than in the histology. The cytological diagnosis of leiomyosarcoma may be auxiliary in the diagnosis of recurrence or metastasis in the patients with alleged leiomyosarcoma.

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Cytologic Features of Villoglandular Adenocarcinoma of the Uterine Cervix - A Report of Two Cases - (자궁목 융모샘 샘암종의 세포 소견 -2예 보고-)

  • Kim, Bohng-Hee
    • The Korean Journal of Cytopathology
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    • v.17 no.2
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    • pp.136-142
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    • 2006
  • Villoglandular adenocarcinoma of uterine cervix has recently been described, and is characterized by good prognosis and occurrence in young women, except a small number of cases. Morphologically, it exclusively shows villoglandular growth and mild to moderate nuclear atypia, the cytologic diagnoses have been frequently missed due to interpretation error. We report here on the cytologic findings of two cases, and both cases were not diagnosed as adenocarcinoma before punch biopsy. One of these cases showed previously described characteristic features such as high cellularity and large tissue fragments with long villous fronds lined by columnar cell with mild nuclear atypia. The other showed moderate cellularity of somewhat smaller clusters without long villous structures. The clusters showed marked nuclear overlapping and the nuclei showed distinct moderate atypia with hyperchromasia and coarse chromatin pattern. The nucleoli were indistinct. Recognition of these features will be helpful to avoid underdiagnosis as a benign lesion, although diagnosis is still difficult in a portion of the cases.