Answer:
The human heart contains an estimated 2–3 billion cardiac muscle cells, but these account for less than a third of the total cell number in the heart.
Explanation:
<span>the type 2 diabetes would be considered an : autoimune disease
autoimune disease are the type of diseaase that caused our cells to attack our own body. In order to deal with thism the scientist created some treatments that strengthen our immune system rather than controlling the amount of bloodsugar</span>