biological science vs in vivo

biological science is a noun but in vivo is not a noun.

Word	Noun	Adjective	Verb	Adverb
biological science	Yes	No	No	No
in vivo	No	Yes	No	Yes

biological science (noun)	in vivo (noun)
the science that studies living organisms

biological science (adjective)	in vivo (adjective)
	of a biological process occurring within a living organism

biological science (adverb)	in vivo (adverb)
	in the living organism