|Blood is a fluid connective tissue or also termed as fluid that circulates in humans and animals providing nutrients and oxygen to all the body parts. It also brought backs the metabolic waste from them. Blood is the red fluid that circulates in our blood vessels, i.e.veins and arteries.Blood is composed of blood cells and plasma fluid. Plasma fluid is mostly composed of water. Blood cells includes RBC.WBC, plasma protein etc. Scholarly peer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal. The work may be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given (narrowly defined) field, who are qualified and able to perform reasonably impartial review.