A star-shaped structure or crystalline form that develops within cyst tissue, observed in certain parasitic infections.
From Greek 'kystis' (cyst) and 'aster' (star), literally describing the star-like appearance of structures found in cyst formations.
When parasitologists first observed cystasters under early microscopes, they thought they were seeing actual stars—these beautiful geometric structures are actually the organism's clever way of protecting itself from the host's immune system.
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