正常胞浆内可含有脂褐素的细胞是:
A.肝细胞B.附睾和睾丸间质细胞C.肾上腺网状带细胞D.肾小管上皮细胞E.心肌细胞
参考答案:B
已知b<a<0<c,化简|a|-|b+a|+|c-b|-|a-c|.
Which of the following signs and symptoms is classic for a patient with rheumatoid arthritis
A.Joint swelling, joint stiffness in the morning, and bilateral joint involvement.
B.Crepitus, development of Heberden's nodes, and anemia.
C.Pain on weight-bearing, rash, and low-grade fever.
D.Fatigue, leukopenia, and joint pain.