During the second trimester of pregnancy, fetal development progresses by leaps and bounds. Pregnancy symptoms for the mother also undergo some changes. The risk of miscarriage is also decreased.
- the second trimester of pregnancy usually marks the disappearance of fatigue, nausea, morning sickness, and breast tenderness. The mother will notice physical changes :darkening skin, swelling breasts, and the appearance of weak contractions. Soreness in the hips and pelvis as the body adjusts to make room for the growing fetus.
During the second trimester, women can be more prone to urinary tract infections and bladder infections. Some women develop constipation and hemorrhoids. Some dietary adjustments can make women feel more comfortable and reduce these pregnancy symptoms. Signs of weight gain in areas like the thighs and upper arms.
<span>Cytotoxic T cells recognize specfic antigens on the MHC sites to respond to an infection whereas NK cells are innate response and don't rely on antigen.</span>
