Localization of COH-1 in embryos and larvae. (A) Wild-type embryos stained
with anti-COH-1 antibody (COH-1, red) and Sytox green (DNA, green). COH-1 was
not detectable in an early embryo (∼50 cells). In an embryo of a later
stage (∼300 cells), COH-1 associated chromosomes in every cell, regardless
of the phase of the cell cycle, including metaphase (arrows) and anaphase
(arrowheads). Bar, 10 μm. (B) The posterior half of an L2 larva, stained as
described above. COH-1 localized to chromosomes of virtually all somatic
cells, but was missing from the germ cell nuclei. Bar, 10 μm.