Figure 1.
Colocalization of JIL-1 with MSL1 protein on the male X chromosome. Double labeling of male polytene chromosomes with antibodies against JIL-1 (B) and MSL1 (C) reveals identical banded staining patterns on the X chromosome. The composite image (A) shows the extensive overlap between JIL-1 (green) and MSL1 (red) labeling as indicated by the predominantly yellow banding. The only exception to the colocalization between JIL-1 and MSL1 is found at the tip of the X (arrow) that specifically stains for JIL-1 only. Unlike JIL-1, MSL1 was not detectable on the autosomes (B and C).