McClure H M, Belden K H, Pieper W A, Jacobson C B
Science. 1969 Sep 5;165(3897):1010-2. doi: 10.1126/science.165.3897.1010.
An infant chimpanzee (Pan troglodytes) with clinical, behavioral, and cytogenetic features similar to those in Down's syndrome is described. The infant shows retarded growth rate, congenital abnormalities, retarded neurologic and postural development, epicanthus, hyperflexibility of the joints, muscle hypotonia, and trisomy of a small acrocentric chromosome.
描述了一只具有与唐氏综合征相似临床、行为和细胞遗传学特征的幼年黑猩猩（黑猩猩属）。这只幼崽表现出生长速度迟缓、先天性异常、神经和姿势发育迟缓、内眦赘皮、关节过度灵活、肌张力减退以及一条小近端着丝粒染色体三体。
