Blood cell
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A '''blood cell''' (also called '''blood corpuscle''') is any cell of any type normally found in [[blood]]. In [[mammal]]s, these fall into three general categories:
*[[Red blood cell]]s
*[[White blood cell]]s
*[[Platelet]]s
Together, these three kinds of blood cells sum up for a total 45% of blood tissue (55% is [[Blood plasma|plasma]]).<ref>{{cite book
| last = Maton
| first = Anthea
| authorlink =
| coauthors = Jean Hopkins, Charles William McLaughlin, Susan Johnson, Maryanna Quon Warner, David LaHart, Jill D. Wright
| title = Human Biology and Health
| publisher = Prentice Hall
| date = 1993
| location = Englewood Cliffs, New Jersey, USA
| pages =
| url =
| doi =
| id =
| isbn = 0-13-981176-1}}</ref>
{|class="wikitable"
|+Comparison
|-
! [[Cell type]] !! Primary function !! Lifetime
|-
! [[Red blood cell]]s
| transport of [[oxygen]] || 120 days
|-
! [[White blood cell]]s
| produces [[Antibody|antibodies]] to fight infection || days to years
|-
! [[Platelet]]s
| blood clotting || 8 days
|}
==Disorders==
{{See also|hematologic diseases}}
A decrease in number of blood cells is called [[cytopenia]]. An increase, on the other hand, is called [[polycythemia]].<ref>[http://www.nlm.nih.gov/medlineplus/ency/article/000589.htm Polycythemia vera] nlm.nih.gov</ref>
==References==
{{reflist}}
==External links==
*[http://gslc.genetics.utah.edu/units/basics/blood/blood.cfm What is Blood?] from the Genetic Science Learning Center at the University of Utah.
*[http://www.microbiologybytes.com/iandi/bloodmap/Blood.html Cells of the blood]
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[[Category:Blood cells| ]]
[[da:Blodlegeme]]
[[de:Blutzellen]]
[[fr:Cellule sanguine]]
[[id:Sel darah]]
[[he:תא דם]]
[[nl:Bloedcel]]
[[ja:血球]]
[[no:Blodcelle]]
[[nn:Blodlekam]]
[[pl:Komórki krwi]]
[[pt:Célula sanguínea]]
[[simple:Blood cell]]
[[sl:Krvnička]]
[[sr:Крвна ћелија]]
[[fi:Verisolu]]
[[sv:Blodkropp]]
[[tr:Kan hücreleri]]
[[zh:血细胞]]