You are at: Homepage > Donors > All you need to know about blood > What is blood? > Introduction

			Introduction Components Blood groups
			Introduction: What is blood? • Blood is a tissue made up of a series of elements with different characteristics and functions, which is why they are transfused separately to different patients. This enables more than one patient to benefit from a single blood donation. Blood donations are fractionated to obtain three basic elements: red blood cell concentrates, platelet concentrates and plasma.