In a modified trichrome stain, Microsporidia appear as what, and what size?

In a modified trichrome stain, Microsporidia appear as what, and what size?

• A. Purple spheres, 10-15 mm in diameter
• B. Pink ovals, 1-3 mm in diameter
• C. Blue ovals, 4-6 mm in diameter
• D. Fluorescent spheres, 8-12 mm in diameter

Answer: (B)

Microsporidia are visualized with the modified trichrome stain as pink to red oval (ovoid) spores that stand out against the background. These spores are very small, about 1–3 micrometers in diameter, which is why they appear as tiny pink ovals under the microscope. The color and shape combination—pink, oval spores—fits what this stain highlights. The other descriptions describe colors or forms that don’t match the staining pattern of Microsporidia (purple spheres, blue ovals, or fluorescent spheres).

Microsporidia are visualized with the modified trichrome stain as pink to red oval (ovoid) spores that stand out against the background. These spores are very small, about 1–3 micrometers in diameter, which is why they appear as tiny pink ovals under the microscope. The color and shape combination—pink, oval spores—fits what this stain highlights. The other descriptions describe colors or forms that don’t match the staining pattern of Microsporidia (purple spheres, blue ovals, or fluorescent spheres).