title: [Distribution of acid phosphatase in the chicken blastoderm].
abstract: The distribution of acid phosphatase in the chick blastoderm (stages 2--4 by HH) has been studied using cytochemistry. A marked increase of enzymatic activity all over the blastoderm was shown to coincide with the beginning of primitive streak formation. A part of the cells after their immigration are characterized by the fall of acid phosphatase activity. The percentage of such cells increases in the cranio-caudal direction of the definitive primitive streak. The patterns of yolk utilization upon the separation of individual embryonic rudiments are discussed.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism*; D000818:Animals; D001755:Blastocyst / Q000201:enzymology*; D001756:Blastoderm / Q000201:enzymology*; D002454:Cell Differentiation; D002642:Chick Embryo / Q000201:enzymology*; D004789:Enzyme Activation
chemical_list: D000135:Acid Phosphatase
vernacular_title: Raspredelenie kisloĭ fosfatazy v blastoderme kuritsy.