Assertion: virus | /r/MadeOf | a protein coat
Facets:
Source sentences:
text: All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid.
text: Many viruses contain lipid or protein coats that can be inactivated by chemical alteration.
text: This type of process is typically used for parvoviruses and other viruses containing a protein coat.