Talk:Monocyte

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Hello everyone, I made some changes to the article that I hope are helpful:

• it has become clear that monocytes also exert functions on their own instead of only serving as progenitors for macrophages and dendritic cells so I expanded a bit on that
• I clarified the nucleus section and edited the “structure” section because it contained functional information
• I added details about the size in the structure section and removed them from the development section
• I removed details about the percentage in the development section since it was already in the structure section but with different numbers
• I restructured the sections
• I moved the details about functions from the subpopulations section to the functions section
• I moved the Covid info to the clinical significance section
• The part about most of the monocytes residing in the spleen does not seem to be consensus
• I clarified the crawling/patrolling

I am happy for any remarks on my edits. I am very new to Wikipedia and these were my first contributions, so please be patient if I made some mistakes :) Explorative Alpaca (talk) 17:20, 25 April 2022 (UTC)[reply]

Probably worth mentioning the new research that the spleen serves as a reservoir for monocytes. 68.143.105.186 (talk) 20:56, 6 August 2009 (UTC)[reply]

A labeled version of that electron microscope image would rock. One with arrows and call-outs. I can't identify anything but red and white cells in that picture. TomCerul (talk) 19:00, 9 November 2009 (UTC)[reply]

The word unilobar was added in the first edit of 22 January 2014, making the sentence in the lead read as Monocytes have bean-shaped nuclei that are unilobar, which makes them one of the types of mononuclear leukocytes (agranulocytes). But the accompanying image very clearly shows two illustrative monocyte cells with nuclei that are each multilobar. So which description is correct? Milkunderwood (talk) 02:43, 27 June 2015 (UTC)[reply]

Hi. Good question, and it's one that Wikipedia ought to be clearer about, for the sake of all of us who aren't biologists or pathologists (in other words, most humans and most Wikipedia readers). We should be able to come here to Wikipedia and sort out the 101-level concepts of this business (mononuclear, multinuclear, and polymorphonuclear). Back in 2014, digging around in Dorland's and elsewhere, I found that the distinction of lobes of the nucleus lies at a rather high threshold, higher than the one most readers would expect (and which is reflected in your question). The threshold is at the level of being so thoroughly furcated that the portions look, or almost look, as if they were separate nuclei (in which case they are considered lobes). For example, the image currently at the top of the

polymorphonuclear leukocytes (poly- + morpho- + -nuclear, "multiple forms of nucleus") are in fact mononuclear cells—not multinucleated ones, although the lobes make them look, or almost look, that way—so contradistinguishing one class of leukocytes from another by calling them monocytes (a second bit of oddness) is a bit silly, if one were interested in controlling the language. But alas, one is not—or I should say, most people aren't, and thus we humans usually don't do it. Which makes for all kinds of belabored pedagogy when we try to learn. It's a sad little endemic pathology. At any rate, one can see behind today's usage oddnesses a hint of an earlier era when the state of the art in the magnification and resolution of microscopy was still often having trouble differentiating cells with deeply furcated nuclei (i.e., lobed nuclei) from those with multiple nuclei. Quercus solaris (talk) 14:22, 27 June 2015 (UTC)[reply

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Monocytes are a type of leukocyte, or white blood cell. They are the largest type of leukocyte an 185.118.24.90 (talk) 17:50, 2 December 2021 (UTC)[reply]

Can someone clarify in the text what it means to say "Monocytes are mononuclear cells"? As far as I know, cells with nuclei normally have one of them, so the phrase appears to be a tautology. I looked for information at