has part
has part
has_part
characteristic of
has modifier
sperm head
abnormal sperm head morphology
small sperm head
microcephalous sperm
reduced size of the head segment of the sperm cell
decreased sperm head size
microcephalic sperm
sperm microcephaly
small sperm heads
MP:0009235
small-headed sperm
reduced sperm head size
MPheno.ontology
abnormal
decreased size