Changes

*'''Bursa of Fabricius''' - site of haematopoesis in birds and necessary for the maturation of B-cells. The bursa develops as a dorsal diverticulum of the proctadael region of the cloaca (lat. ''bursa fabricii'')

*'''Bursa of Fabricius''' - site of haematopoesis in birds and necessary for the maturation of B-cells. The bursa develops as a dorsal diverticulum of the proctadael region of the cloaca (lat. ''bursa fabricii'')

*'''B-cells''' - a subgroup of lymphocytes and precursor to antibody producing cells. Also known as B-lymphocyte

*'''B-cells''' - a subgroup of lymphocytes and precursor to antibody producing cells. Also known as B-lymphocyte

*'''B-cell antigen receptor''' - receptor found on B-cells that identifies antigens usually composed of monoclonal IgM but occationally monoclonal IgD. Each B-cell has only one IgM antigen receptor and one IgD receptor of the same specificity

*'''B-cell antigen receptor''' - receptor found on B-cells that identifies antigens usually composed of monoclonal [[IgM]] but occationally monoclonal IgD. Each B-cell has only one [[IgM]] antigen receptor and one IgD receptor of the same specificity

===C===

===C===