Answer:
a technique that uses specific antibodies to visualize features of cells
I'm no expert at all so don't take my word but number one looks like it will make the most sense. Because it has the word reproductive system and yeah...
Answer:
Primary osteoarthritis is mostly related to aging. With aging, the water content of the cartilage increases and the protein makeup of cartilage degenerates. Repetitive use of the joints over the years causes damage to the cartilage that leads to joint pain and swelling
Explanation:
