I know that blood platelets and erythrocytes do not have a nucleus. Are there more cells in the human body without a nucleus, such as pancreas, cartilage, or lung cells?
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$\begingroup$ My lecturer told me that only red blood cells and platelets lack nucleus in humans $\endgroup$– Ndumiso MisohCommented Jun 2, 2017 at 17:03
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2 Answers
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Wanted to give a one line answer some day!!
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1$\begingroup$ That's two lines :) +1 nonetheless, interesting finds! $\endgroup$– AliceD ♦Commented Apr 24, 2015 at 21:34
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$\begingroup$ What do lens fiber cells and keratinocytes do? Thanks for the help, but I just wanted to know of all the common known cells, like cells of organs. $\endgroup$– AceCommented Apr 24, 2015 at 21:42
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1$\begingroup$ @Ace lens fiber cells differentiate to form the lens of your eye and keratinocytes form skin and hair. $\endgroup$– WYSIWYGCommented Apr 25, 2015 at 9:47
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1$\begingroup$ Most keratinocyte types have a nucleus. A small subtraction of keratinocytes, namely corneocytes , en.wikipedia.org/wiki/Corneocyte , lack a nucleus. $\endgroup$– tsttstCommented Jul 20, 2016 at 2:00
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Short answer
As far as I know, red blood cells and blood platelets are the only human cells in our body without a nucleus.
Background
Erythrocytes and thrombocytes are the only human cells without a nucleus, as far as I know. However, if you count the gut as being part of the human body (in essence it is a continuation of the skin and as such it can be considered to be on our outside), then we are loaded with cells lacking a nucleus, namely all the bacteria that live in our intestines such as E. coli. Bacteria, being prokaryotes, lack a nucleus. In fact, there are ten times more bacteria than human cells in our gut (Wenner, 2007).
Reference
Wenner, Sci Am 2007
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$\begingroup$ There are a couple of them more if I am not wrong. $\endgroup$– WYSIWYGCommented Apr 24, 2015 at 14:47