Abstract
It has been established that trophoblast-specific beta-glycoprotein and pregnancy-associated alpha 2-glycoprotein specifically react with non-fixed PHA and Con A. Affinity to the former protein is significantly higher than to the latter one. alpha-Fetoprotein has a low affinity to Con A alone. Affinity to this lectin is in an agreement with the content of carbohydrates contained by pregnancy proteins. A considerable part of human serum proteins bind with Con A; receptors for PHA possess only some serum proteins. As the above-mentioned lectins are often used for stimulation of lymphocyte blast transformation, in is recommended that the constituent parts of the culture medium should be preliminarily tested to specify more accurately their affinity to PHA and Con A.
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