human metaphase chromosome in a sentence

1. In the laboratory experiment part , human peripheral blood , cultured cells and icr mice were study objects . the changes of mitotic chromosome numbers were measured by human metaphase chromosome counts and statistic analyzed used x2 - test . the changes of meiotic chromosome numbers were measured by mice one - cell zygote chromosome counts and statistic analyzed usedx2 - test . the effects of low dose ionizing radiation on the expression of topoisomerase ii were measured by immunocytochemistry , western blot and rt - pcr
2. It's difficult to find human metaphase chromosome in a sentence.