title: [Multiple forms of adenosine deaminase in the thymus of the bovine fetus and calf].
abstract: We present data on values of adenosine deaminase (ADA) activity in bovine fetus and calf thymus. Between 13 and 17 weeks of fetal life enzyme activity in thymus increases up to levels observed in older fetuses and calf. ADA activity of thymus is characterized by the presence of three enzymic form ("A", "B", "C") which show molecular weights of greater than 1 x 10(6), 310,000 and 55,000, respectively. Forms "B" and "C" were compared. The relative amounts of the three forms in 17 weeks old fetus were quite similar to those observed in calf thymus.
mesh_terms: D000243:Adenosine Deaminase / Q000032:analysis*; D000818:Animals; D002417:Cattle; D002850:Chromatography, Gel; D005260:Female; D005333:Fetus / Q000201:enzymology*; D007527:Isoenzymes / Q000032:analysis*; D008970:Molecular Weight; D009700:Nucleoside Deaminases / Q000032:analysis*; D011247:Pregnancy; D013950:Thymus Gland / Q000196:embryology / Q000201:enzymology*
chemical_list: D007527:Isoenzymes; D009700:Nucleoside Deaminases; D000243:Adenosine Deaminase
vernacular_title: Forme multiple di adenosina deaminasi nel timo di feti bovini e di vitello.