Q- A 60-year-old man complains of shortness of breath. Examination reveals bilateral pleural effusions and pitting edema up to the thighs’ level.
Which of the following is the most likely laboratory finding in this patient?
Q- Which one of the following types of cells is programmed to destroy cells the fail to display MHC class 1 antigen properly?
A- B lymphocyte
B- CD4 lymphocyte
C- CD8 lymphocyte
D- Natural killer cells
Q- Which one of the following fetal structures transfer oxygenated blood from the umbilical vein to the inferior vena cava and becomes ligamentum venosum after birth?
A- Azygous vein
B- Ductus arteriosus
C- Ductus venosus
D- Umbilical artery