Lymph nodes are very small clusters of immune cells that function as part of the bodyâs immune system. There are more than 600 lymph nodes throughout the body, but the ones most frequently enlarged or swollen are the lymph nodes in the neck, under the chin, in the armpits, and in the groin.here are more than 600 lymph nodes throughout the body, but the ones most frequently enlarged or swollen are the lymph nodes in the neck, under the chin, in the armpits, and in the groin.
Uses of sulfuric acid. By far the largest amount of sulfuric acid is used to make phosphoric acid, used, in turn, to make the phosphate fertilizers, calcium dihydrogenphosphate and the ammonium phosphates. It is also used to make ammonium sulfate, which is a particularly important fertilizer in sulfur-deficient.
Formic acid is an efficient and environmentally friendly organic acid for many applications. In leather processing, the acid is used in tanning and dye fixing and serves also as a neutralizing agent and pH adjuster in many steps of textile processing.ormic acid is an efficient and environmentally friendly organic acid for many applications. In leather processing, the acid is used in tanning and dye fixing and serves also as a neutralizing agent and pH adjuster in many steps of textile processing.