Table 2 B cell phenotype definitions

JBCs

CD19⁺ Jo-1-GST⁺

Non-JBCs

CD19⁺ Jo-1-GST⁻

B_ND

CD19⁺ CD27⁻ IgD⁺ IgM^lo/−

CD21^lo

CD19⁺ CD21^lo/−

CD21^lo CD27⁺ memory

CD21^lo CD27⁺ IgD⁻

Unswitched memory

CD19⁺ CD27⁺ IgD⁺ IgM⁺

Switched memory

CD19⁺ CD27⁺ IgD⁻ IgM⁻ IgG⁺

IgM memory

CD19⁺ CD27⁺ IgD⁻ IgM⁺

Atypical memory

CD19⁺ CD24⁻ CD27⁻ CD38⁻ IgD⁻

Transitional

CD19⁺ CD10⁺ CD24^hi CD27⁻ CD38⁺ IgD⁺

Plasmablasts

CD19⁺ CD24⁻ CD38^hi