T-lymphocytes are divided into two main sub-classes: CD4+ and CD8+. Which of the following statement(s) is/are true concerning these classes of T-cells?
A. CD4+ T-cells are restricted to recognizing antigens of the class II major histocompatibility complex (MHC)
B. CD8+ T-cells perform primarily cytotoxic functions
C. CD4+ 8+ double positive cells are well-differentiated mature cells
D. CD4+ T-cells also perform suppressor functions
Answer:A
T-lymphocytes are divided into two main sub-classes: CD4+ and CD8+. Which of the following statement(s) is/are true concerning these classes of T-cells?
A. CD4+ T-cells are restricted to recognizing antigens of the class II major histocompatibility complex (MHC) B. CD8+ T-cells perform primarily cytotoxic functions C. CD4+ 8+ double positive cells are well-differentiated mature cells D. CD4+ T-cells also perform suppressor functions