B cells / B Lymphocytes

Immune phenotypic markers (CD markers): CD45+, CD19+, CD2ß+, CD24+, CD38, CD22
Location: Blood, Lymphoid tissues

Following antigen-dependent activation of the B cell receptor and supportive signals from CD4+ T cells, B cells differentiate into cells capable of BCR diversification, antibody secretion, or long-term memory
Boothby et al. 2019 Genes Dev 33(1-2): 26-48

B cells can act as antigen presenting cells
Fridman et al. 2012

B cells are one of the dominant cell types expressing MHC class II molecules

B cells present processed antigens via MHC II to CD4+ Th2 cells

B cells recognize Alarmins / Damage-associated molecular pattern (DAMPs), too

B cells are required to generate optimal antitumor immunity in response to PD-1 blockade

see also:
Plasmablast / Plasma cells