Why B-cells are called B-cells?

In birds, the bursa of Fabricius (Latin: Bursa cloacalis or Bursa fabricii) is the site of hematopoiesis, a specialized organ that, as first demonstrated by Bruce Glick and later by Max Cooper and Robert Good, is necessary for B cell (part of the immune system) development in birds. #BCells #TCells #immunology #bloodCells #whiteCells #lymphocytes