has part
has part
has_part
characteristic of
has modifier
retinal rod cell
decreased retina rod cell number
absent retina rod cells
MPheno.ontology
absence of one of the photoreceptor cell types of the vertebrate retina, in which the photopigment is in stacks of membranous disks separate from the outer cell membrane
MP:0008454
absent retinal rod cells
abnormal
absent