Overview
of Immune System - 1
Composition:
1.lymphoid
tissue
˜primary
lymphoid tissue
˜secondary
lymphoid tissue
&Bone
marrow
&Thymus
gland
&lymph
nodes
&spleen
&peripheral
lymphoid tissue
2.cells of
various types
˜lymphocytes
&B-cells
&T-cells
&natural
killer-cells (NK-cells)
