part of expresses oc somatic precursor cell ocellar complex precursor cell 2021-05-25T14:03:44Z FBbt:00058141 fly_anatomy.ontology A cell of the anterior and dorsal region of the eye disc that will give rise to the ocelli and the interocellar cuticle. It expresses ocelliless, which is initially expressed throughout the eye disc but whose expression is restricted to this type of cell by the third instar larval stage (Brockmann et al., 2011; Dominguez-Cejudo and Casares, 2015; Ariss et al., 2018). presumptive ocellus