The ASR Zebrafish facility provides several services including fish housing, embryo production, gene manipulation, and phenotypic analysis. Gene expression can be manipulated through RNA, DNA, and morpholino microinjections. Phenotypic analysis includes visualization of morphology, histology, fluorescence, and apoptosis. The facility also supports toxicity and drug screening in zebrafish using 96 or 384 well formats with wildtype or transgenic lines. Shared resources are partially supported by Georgetown and Howard University.