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Microbiology. Many Pregnancy Losses Are Caused by Errors in Cell Division. Odd cell divisions could help explain why even young, healthy couples might struggle to get pregnant. Types of immune responses: Innate and adaptive, humoral vs. cell-mediated. B lymphocytes (B cells) Professional antigen presenting cells (APC) and MHC II complexes. Helper T cells. Cytotoxic T cells and MHC I complexes. Review of B cells, CD4+ T cells and CD8+ T cells. Inflammatory response. This unit is part of the Biology library. Browse ... In studying Biology, students will learn about: cells and multicellular organisms; maintaining the internal environment; biodiversity and the interconnectedness of life; heredity and continuity of life. How will students be assessed? Students will complete the following assessments: data test (10%) student experiment (20%) research ...Biology is a complex and broad field, and its main focus is the study of life. 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