A common procedure to test for the presence of antigens is to perform an agglutination reaction by performing an antibody screen. In an agglutination reaction that is graded 2+ the red blood cells start to be broken and medium-sized agglutinates are formed. In this reaction no red blood cells are free, only agglutinates are seen at the bottom of the microtubes. The characteristics of the reaction herein described concur with an agglutination reaction that is graded 2+.
The water depth may may have dropped , if the same aquifer is being pumped aggressively by many pumps, it can deplete the aquifer to the point where certain pumps will start to “run dry” temporarily. . Or water evaporating
how many pores or holes in a rock let more things in depending on how many pores/holes it has. think of it like skin. the bigger your pores the more dirt seeps through
