rat alpha-lactalbumin ( alpha-la ) mrna has been purified from the total rna of 4-day lactating mammary gland by poly ( u ) -sepharose chromatography and by fractionation of the poly ( a ) + rna on sucrose gradients . alpha-la mrna was homogeneous as judged by electrophoresis in urea/agarose gel and in 1.5 % agarose gel under glyoxal-denaturation conditions , which gave a molecular weight of 210,000 .
C0929301
mammary gland
C0002287
alpha-la