The activity and distribution of gamma-glutamyl transpeptidase (y-GT) in human foetal organs

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Abstract
Summary The activity and distribution of y-GT was investigated in a number of organs from human foetuses aged from 14 to 24 weeks post menstruationem. Over this period, enzyme activity increased in the kidney, pancreas and thymus, but decreased in the small intestine. No trend could be established for the liver, although activity was high. In the lung, spleen, brain and adrenals, y-GT was either detectable at very low levels or could not be demonstrated. The possible relationship between y-GT activity in some human tumours and the enzymes level in the corresponding foetal organs is discussed.