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Ecto-5'-nucleotidase (ecto-5'-NT) activity was measured in human B cells at different stages of development. Ecto-5'-NT activity of B cell preparations from fetal spleen and cord blood was 5.08 and(More)
The ability of human peripheral blood mononuclear cells to synthesize IgE in vitro in response to pokeweed mitogen (PWM) is controversial. To determine whether the conflicting results obtained by(More)