A(n) organ<>is<>a structure that is composed of one or more types of tissues$$$a structure<>is composed<>of one or more types of tissues
Persistent Infections by Organ System Some viruses can establish persistent infection at the same time in different cell types of one or more tissues or organs.
A(n) organ is a structure that is composed of one or more types of tissues.
What is a structure that is composed of one or more types of tissues?