Random position of human heterochromatin-bearing chromosomes in first and third mitoses of lymphocyte cultures

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Abstract
The position of chromosomes 1, 9, and 16 in first and third mitoses of lymphocyte cultures was measured in BUdR-labelled air-dried chromosome preparations. No significant deviation from a random distance could be found between the two homologues of each chromosome, either in the first or in the third mitoses after phytohemagglutinin stimulation. Colchicine treatment also had no influence.