936 Post neoadjuvant chemotherapy tissues enriched in a distinct CD27−IgD−CD21-CXCR5- atypical double negative (DN)2 B cells, with potential role in purinergic signalling in early... by Helen Kakkassery, Thanussuyah Alaguthurai, Rosalind Graham, Esme Carpenter, Farhana Hossain, Sheeba Irshad, Paul Buckley, Gheed Alhity, Sadiyah Mukhtar