The effector is the blood starting to clot. This is because it is binding together with a protein in response to a signal.
No it’s not. It is a problem in most of the first world and in a majority of the second world.
The time it takes for dissolvable or absorbable stitches to disappear can vary. Most types should start to dissolve or fall out within a week or two, although it may be a few weeks before they disappear completely. Some may last for several months.