An endoskeleton of calcified cartilage
<span>vaccine
The wording given is pretty much the exact definition of a vaccine. The key to how a vaccine works is that it provides to the immune system, samples of the surface proteins of the infectious materials. With those samples available, the immune system is able to produce antibodies that react to those proteins.</span>
Answer:
An anabolic steroid
Explanation:
Anabolic steroids ca also e referred to as anabolic-androgenic steroids. They are synthetic or man-made steroids that mimic natural androgens like testosterone in their structure and functions. It is majorly used for muscle mass building.
When anabolic steroids are misused or abused, it can have an effect on an individual's mental health and presenting symptoms like depression, mood swings, mania, aggression etc.
Some athletes and bodybuilders take anabolic steroids to promote building of their muscle mass rapidly.
