[Electrophoretic analysis of the characteristics of the protein composition of leukocytes from Down's syndrome patients]. / Elektroforeticheskii analiz osobennostei belkovogo sostava leikotsitov bol'nykh s sindromom Dauna.

Protein with a molecular mass of 53000 daltons undetectable in healthy persons was identified by electrophoresis in peripheral blood leukocytes of patients with Down's syndrome. The protein was completely extracted with 0.4 N HCl from leukocyte homogenates and was found to be identical, as regards electrophoretic mobility, to protein detected in two patients with chronic myeloblastic leukemia. The causes of discrepancy between theoretically expected and electrophoresis-revealed differences in protein composition of normal and trisomal cells.