5号染色体的一种家族性多态性变异

Seabright M, Gregson N M, Johnson M

J Med Genet. 1980 Dec;17(6):444-6. doi: 10.1136/jmg.17.6.444.

Two male fetuses and their mothers, referred for amniocentesis because of high levels of AFP in their blood, were found to carry an anomalous chromosome 5 with a large heterochromatic segment in the long arm. One of the fetuses had an additional ring chromosome.

两名男性胎儿及其母亲因血液中甲胎蛋白水平高而接受羊膜穿刺术检查，结果发现他们的5号染色体异常，长臂上有一个大的异染色质区段。其中一名胎儿还额外有一条环状染色体。