Mastitis is a condition which involves A: A type of leukemia B: Infection of the breast C: Infection of lymph nodes D: Mast cells E: Tumors of glandular tissue

Which one is wrong in the description of endocrine glands（） A: The secretions are released directly into the blood. B: 腺细胞排列成团索状或围成滤泡 C: There is a rich capillary network between the glandular cells D: no duct E: capillary is continuous