This is acne
Try putting toothpaste
Two cells which are in direct contact can send signal to each other across gap junction. For cells which are not in direct contact, there is a number of ways through which these cells communicate, these basically include: paracrine signalling and endocrine signalling. In paracrine signalling, a cell secrete a chemical substance which have effect on a nearby cell while in endocrine signalling, hormones are released into the circulatory system, which convey them to the target cells.
Smallpox is the only human disease to have been eradicated by vaccination. The last case was in <span>Somalia in 1977 and was successfully eradicated. Now we have been smallpox free for 30 years!</span>
the answer to this question is Stomata.
Hope this helps! Have a great day.0
