Fig. 2.
The immunophenotype of total plasma cells (CD38++) as well as plasma cell populations defined by CD45 expression.
Mature plasma cells were CD38++, CD45−; immature plasma cells were CD38++, CD45+; and primitive plasma cells were CD38++, CD45++. Expression of the antigens CD19, CD20, CD40, CD56, CD80, CD86, and CD138 is shown for 35 patients at diagnosis.