Answer:
Explanation:
When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
<span>is the Endocrine system it is kinda like a shovel, as it scrapes out the decaying skin cells.</span>
<span>What food source contains all the essential amino acids and is the best source of protein?
-</span><span>meat
</span><span>Plant proteins are often of lower nutritional quality than animal proteins because they often lack one or more essential amino acids. However we can restore the balance of amino acids, by involving them in the same meal.</span>
