Figure 1. Calcium oxalate crystals distributed in the Malphigian tubules of fruit fly in the (A) 0.25% ethylene glycol lithogenic group, (B) 2% potassium citrate group, and (C) 2% hydroxycitrate group (100 polarized microscope)

From

Inhibitory Effect of Hydroxycitrate on Calcium Oxalate Crystal Formation in a Drosophila Model

Wen-Chi Chen, Huey-Yi Chen, Wei-Yong Lin, You-Rong Yang, Ming-Yen Tsai, Yung-Hsiang Chen

Journal of Food and Nutrition Research. 2018, 6(11), 706-709 doi:10.12691/jfnr-6-11-5