+**B1a** is a distinct subpopulation of [B cells](/wiki/B_cell), playing a crucial role in the initial [immune response](/wiki/Immune_response). These unique lymphocytes are known for producing natural [antibodies](/wiki/Antibody), offering a first line of defense often linked to innate immunity.
+## See also
+- [Lymphocyte](/wiki/Lymphocyte)
+- [Adaptive Immunity](/wiki/Adaptive_Immunity)
+- [Innate Immunity](/wiki/Innate_Immunity)
... 1 more lines