All of the following are features of epithelium EXCEPT ()
A. more cells and less intercellular substance
B. cells are tightly joined with an very narrow intercellular space
C. have free surface and basal surface
D. rich in capillaries and nerve endings
E. cover the external and internal surface of the body
查看答案
The basic tissues of the body include all of the following EXCEPT ()
A. epithelial tissue
B. lymphoid tissue
C. connective tissue
D. muscle tissue
E. nervous tissue
The most frequently preparation method of tissue section is ()
A. Frozen section
B. Celloidin section
C. Paraffin section
D. Smear preparation
E. Stretched preparation
The most frequently used staining is ()
A. HE staining
B. orcein staining
C. toluidin blue staining
D. Wright or Giemsa staining
E. silver staining
In the CNS, the myelin sheath of the nerve is formed by ____________________?()
A. Schwann cells
B. astrocytes
C. oligodendrocytes
D. macroglia
E. microglia
微信支付 
支付宝支付