CIL:41716, Cricetulus griseus, ovary. In Cell Image Library

Cells were metaphase arrested with thymidine followed by colcemid, then exposed to a low ionic strength swelling medium (0.07M phosphate buffer). Chromosomes were isolated by the non-aqueous hexylene glycol technique of Wray and Stubblefield, squashed in 1:1 acetic acid:ethanol,stained, and transferred to an EM grid. See also: H. Ris 1981 Stereoscopic electron microscopy of chromosomes. Meth Cell Biol 22:77-96 H. Ris 1978 Preparation of chromatin and chromosomes for electron microscopy. Meth Cell Biol 18:220-246.