When disease involves the sphenoid, the sinus can be penetrated either intranasally or through the posterior ethmoid.
当病变累及蝶窦，可以经鼻内和后组筛窦进入蝶窦。
2
Antibodies against CS6 and LPS of Shigella can be detected in sera of mice immunized with recombinant bacteria either orogastrically (o. g. ) or intranasally (i. n. );