An immature B cell that is IgM-positive, CD45R-positive, CD43-low, CD25-negative, and CD127-negative. This cell type has also been described as being AA4-positive, IgM-positive, CD19-positive, CD43-low/negative, and HSA-positive. [ GOC:ak PMID:18432934 PMID:17582343 GOC:tfm GOC:dsd ]

This is just here as a test because I lose it