The image shows a mouse spermatocyte in meiosis immuno-labeled for two components, SYCP3 (red) and SYCP1 green) of the synaptonemal complex. The red and green signals have been offset to facilitate vi...

Transmission electron micrographs of whole metaphase chromosomes isolated from Chinese Hamster Ovary (CHO) cells showing the characteristic paired chromatids and centromeric constrictions.

Transmission electron micrograph showing the inactive X chromosome (labeled Sex Chromatin), and also known as the Barr body, adpressed to the nucleolus in this section through the nucleus of a spinal ...

High resolution of a daughter micronucleus in anaphase of a dividing cell of Didinium nasutum. The chromosomes are compacted into one large heterochromatic body. Remnants of the mitotic division spind...

Daughter micronucleus in anaphase of a dividing cell of Didinium nasutum. The chromosomes are compacted into one large heterochromatic body. Remnants of the mitotic division spindle remain inside the ...

Image shows a metaphase spread revealing the 46 human chromosomes (blue). Telomeres have been labeled using PNA-FISH and appear as pale dots at the ends of each chromatid.

Phosphorylated H2AX occurs preferentially in open chromatin. Wildtype mouse embryo fibroblasts were treated with the radiomimetic drug neocarzinostatin (NCS) for 1hour prior to being fixed and immunol...

Spinning disk confocal time-lapse imaging of the first mitosis in a C. elegans embryo expressing GFP-KNL-2 (strain OD31) in which KNL-1 has been depleted by RNAi. Discrete foci of GFP signal within th...

Distribution of phosphorylated H2AX occurs preferentially in open chromatin. Wildtype mouse embryo fibroblasts were treated with the histone deacetylase inhibitor trichostatinA 8 hours before being in...

Transmission electron micrographs showing chromosomes in dividing spermatogonia during metaphase in tissue from ram testis (upper panel) and as they begin to separate during early anaphase in tissue f...