quantitation by dna flow cytometry of the seasonal changes in the relative numbers of haploid ( 1c ) , diploid ( 2c ) and tetraploid ( 4c ) cell numbers in the testis showed that the increase in testis size from december to february was associated with a rapid expansion of the haploid cell compartment as spermatogenesis resumed .
C0039597
testis
C0037864
spermatogenesis