In tissues rich with blood, which pigment is more commonly observed in staining?

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Multiple Choice

In tissues rich with blood, which pigment is more commonly observed in staining?

Explanation:
In tissues with a lot of blood, pigments derived from the heme portion of hemoglobin can form during fixation and staining. Hematin is a brown‑black pigment produced when heme is oxidized in the presence of acids or oxidants during processing. Because rich blood areas contain abundant hemoglobin, more hematin can form and appear as dark pigment in the tissue sections. This makes hematin the pigment you’re most likely to observe in staining of blood‑rich tissues. Hematoxylin and its oxidized form hematoxylin are dyes used to color nuclei, while eosin stains cytoplasm; they are not pigments produced by blood breakdown.

In tissues with a lot of blood, pigments derived from the heme portion of hemoglobin can form during fixation and staining. Hematin is a brown‑black pigment produced when heme is oxidized in the presence of acids or oxidants during processing. Because rich blood areas contain abundant hemoglobin, more hematin can form and appear as dark pigment in the tissue sections. This makes hematin the pigment you’re most likely to observe in staining of blood‑rich tissues. Hematoxylin and its oxidized form hematoxylin are dyes used to color nuclei, while eosin stains cytoplasm; they are not pigments produced by blood breakdown.

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