All of these are antigen presenting cells (APC's)except -

NEET SS
#1

All of these are antigen presenting cells (APC’s)except -
a) T cells
b) B cells
c) Fibroblasts
d) Dendritic cells
e) Langerhans cells

    1. ac
    1. bc
    1. ad
    1. b
    1. ab

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exp:

  • T cells cannot be activated by soluble antigens.
  • Therefore, presentation of processed antigen by antigen presenting cells is required for activation of T cell.
  • The initial step in immune response (whether humoral or cellular) is phagocytosis of the antigen by antigen presenting cells.
  • These antigen presenting cells process and present the antigen to T cells.
  • These activated T cells then interact with B cells (in humoral immunity) or with other T cells (in cell mediated immune response)