Surface and cytoplasmic antigens in retinoblastoma were examined by antisera prepared against two tissue-cultured retinoblastoma cell lines. In addition, several other antisera, including anti-rhodopsin, anti-rod outer segment, anti-large-molecular-weight protein, anti-S, and anti-P antigen, were also utilized in a complement-dependent cytotoxicity assay in order to explore the tumor cell surfa...

background and aims: adventitious agents, especially viral agents are among the most important concerns in viral vaccines. viral contamination of biological products may arise from the original source of the reagents such as, serum, trypsin, animal or human derived media components or cell culture and working seed or cross contamination of vaccine during production. in this study, adventitious ...

Hyperimmune rabbit antisera were prepared against thymocytes, splenic lymphocytes, brain, and leukemias of two mouse strains that were compatible in H-2 but incompatible in the thymic antigen 0. The relative specificity of these antisera against a panel of the same mouse cell types was determined before and after stepwise absorption of the antisera with var ious mouse tissues. Relative specific...

Heterophil phagocytosis of fluorescein-labeled staphylococcal bacteria was analyzed by flow cytometry. Opsonization with two types of normal pooled sera and staphylococcal antisera significantly increased bacterial phagocytosis compared to samples without an opsonin. The staphylococcal antisera did not significantly increase bacterial phagocytosis compared to the normal pooled sera. Opsonizatio...