Which of the following is the most likely future outcome for a thymocyte just entering the thymus?     A)  activation by a B-cell   B)  apoptosis   C)  differentiation into a Tc cell   D)  migration to a lymph node    E)  formation of a granuloma

Which of the following destroys virus-infected cells?   Question 6 options:   A)  cytotoxic T cells   B)  B cells   C)  T helper cells   D)  dendritic cells

Choose the most accurate characteristic of B cells.     A) They help establish and control the sensitivity of the immune response.     B) They stimulate the activities of T cells.     C) They attack foreign cells, normal cells infected with viruses, and cancer cells that appear in normal tissues.     D) They continually monitor peripheral tissues.     E) They differentiate into plasma cells that secrete antibodies.

IgE binds to which of these cell types to trigger allergic responses? O 1) B cell O 2) neutrophil O 3) mast cell 4) Monocyte