Description:4DNESG8AL3UY: Chromatin tracing of BX-C in Drosophila - Fub Heterozygous mutant, 10-kb resolution Optical Reconstruction of Chromatin Architecture (ORCA) of a 700-kb region including the bithorax complex (BX-C) and flanking domains at 10-kb steps in fly embryos that are homozygous at the Fub locus (Fub/Fub). Additionally, 29 mRNA and nascent RNA species are detected by sequential RNA FISH.