H BLOOD GROUPS
\ˈe͡ɪt͡ʃ blˈʌd ɡɹˈuːps], \ˈeɪtʃ blˈʌd ɡɹˈuːps], \ˈeɪ_tʃ b_l_ˈʌ_d ɡ_ɹ_ˈuː_p_s]\
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The major human blood type system which depends on the presence or absence of two antigens A and B. Type O occurs when neither A nor B is present and AB when both are present. A and B are genetic factors that determine the presence of enzymes for the synthesis of certain glycoproteins mainly in the red cell membrane.
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Word of the day
Procollagen Proline Dioxygenase
- mixed-function oxygenase that catalyzes hydroxylation prolyl-glycyl-containing-peptide, usually in protocollagen, hydroxyprolylglycyl-peptide. The enzyme utilizes molecular oxygen with a concomitant oxidative decarboxylation of 2-oxoglutarate to succinate. EC 1.14.11.2.