The Identification of Gene Products in a Gene Library. Restriction enzymes (to cut the DNA) and gel electrophoresis (to separate the resulting fragments) can be used to produce a physical map of DNA segments in a process known as restriction mapping.
Estrogen pills may be prescribed to lessen the symptoms of menopause, like hot flashes. Estrogen is used in birth control pills to prevent conception. The thickness of the endometrium changes along with the female's menstrual cycle. Older women may have an estrogen deficiency as they begin menopause.
Benefits. Birth control pills utilizing norethindrone acetate are less likely to cause side effects such as acne and unwanted hair growth than second-generation progestins. The brand Estrostep may be helpful for women who experience estrogen-related side effects such as migraines, nausea or fluid retention.enefits. Birth control pills utilizing norethindrone acetate are less likely to cause side effects such as acne and unwanted hair growth than second-generation progestins. The brand Estrostep may be helpful for women who experience estrogen-related side effects such as migraines, nausea or fluid retention.