Proximal tubular cell — Free Physiology Illustration | GPAI | GPAI

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Proximal tubular cell — Free Physiology Illustration | GPAI | GPAI

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Proximal tubular cell

Proximal tubular cell

Physiology

Proximal tubular cell

A single proximal tubule epithelial cell from the kidney, cuboidal to slightly tall and boxy with clear apical-basal polarity. The cytoplasm is pale to moderately pink, with a round central nucleus that may appear purple. The apical surface has a pronounced dense fuzzy brush border formed by short microvilli, indicating absorptive specialization. The basolateral region is comparatively smoother but may show subtle membrane folding.

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