Hemilineage 1A is composed of cholinergic interneurons and has been shown to be implicated in erratic forward locomotion (Lacin et al., 2019; Harris et al., 2015). Muscle-specific homeobox (msh) was shown to be the hemilineage-specifc transcription factor expressed in the mature 1A cluster (Lacin et al. 2019; Lacin & Truman, 2016). The 1A hemilineage cluster … Continue reading 1A