It would be epithelial tissue that covers it.
Im pretty sure its 20,000-25,000
For the answer to the question above, the answer is "<u>5-10%"</u> percentage of kilocalories in the food consumed is used for tef or
<span>The thermic effect of food. I hope my answer helped you. Have a nice day ahead of you!</span>
Those are calles spikes that are made usually of glycproteins. Those glycoproteins attach to receptors in the cell membrane of the host cell to trick it into letting the virus in.
