A cosmid clone containing the entire human type II alpha 1 collagen gene (COL2A1) was used as probe in the Southern analysis of DNA from a panel of human/hamster somatic cell hybrids containing different portions of human chromosome 12. Two of the hybrids exhibited a similar terminal deletion q14.3----qter, but one was positive for the gene while the other was negative. Therefore, the gene must reside in the region q14.3.
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Law et al. (1986) studied this question.
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