Virus particles in the air coming into the mouth, nose, and throat are folded into envelopes that protect them. Envelopes have spikes that attach to salivary gland receptors on epithelial cells.
Virus particles in the air coming into the mouth, nose, and throat are folded into envelopes that protect them. Envelopes have spikes that attach to salivary gland receptors on epithelial cells.