212.A pathologist views the following tissues (A and B) in a biopsy. She
determines that the tissues are normal. The presence of both of these tis-
sues indicates that the sample was taken from the region of the junction
between which of the following?
320 Anatomy, Histology, and Cell Biology
a. Anal canal and rectum
b. Esophagus and stomach
c. Skin of the face and mucous epithelium of the lip
d. Stomach and duodenum
e. Vagina and cervix