I would go for B. Production of immune cells
The center line of official NHL Hockey Rinks are Red
<span>Pyloric Sphincter. that is the answer </span>
Arrange in two layers, called the phospholipid bilayer. Phospholipid molecule has a head, and two tails. The head is hydrophilic (it likes water) and the tails are hydrophobic (phobic meaning it has a phobia of water, or in simple words, hates water).
