This is a skin sample stained with Masson's trichrome stain.

Our instructor share this image with us. She didn't specify much. She only said it was a skin sample. Could you tell me what is the thing that was pointed at with the blue arrow?

I believe that I found a similar image in Ross' Histology (e6) Plate 44.

Thank you

  • $\begingroup$ Could you please edit your question and add, what you think this is? And what are the pros and cons of your solution? $\endgroup$
    – Arsak
    Commented Oct 24, 2018 at 13:17

1 Answer 1


It is difficult to say based on the limited informations about the sample, but I could assume that this is a Masson's Trichrome staining. Briefly: blue/green - collagen, red/pink - cytoplasm, dark pink/brown - nucleus.

Presence of the adipose tissue (white area on the right) and a lot of collagen (green) suggest that the sample highly likely comes from dermis. The large structure pointed by the arrow looks like an eccrine sweat gland. Here, you can see it in classical haematoxylin and eosin staining:

enter image description here

Alternatively, see: http://medcell.med.yale.edu/histology/skin_lab/eccrine_sweat_glands.php


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