Objective:To study the effect between Ethinylestradiol combined Rivanolum and Misoprostil and sole Rivanolum for stoping the metaphase and late pregnancy.
Human Peripheral blood exposed with tritiated water at variousdoses for 54 hr was examined to observe the chromosome and chromatid abe-rrations at metaphases in the first mitosis of lymphocytes.
Metaphase 1 Homologous pairs move together along the metaphase plate: the paired homologous chromosomes align along an equatorial plane that bisects the spindle.