Meaning of PACKED CELLS

WordNet Dictionary
	Definition:		[n]  a preparation of blood cells separated from the liquid plasma; "packed cells are given to severely anemic patients in order to avoid overloading the circulatory system with too much fluid"
	See Also:		blood cell, blood corpuscle, corpuscle
Biology Dictionary
	Definition:		This refers to the concentrated red blood cells used for transfusion. Each unit of whole blood (about 450 ml) obtained from a donor is mixed with preservatives containing: citrate, phosphate, dextrose and adenine. It is centrifuged to separate the plasma (about 200 ml) from the red blood cells (about 250 ml).