Crystals [noun]

Crystals of urea nitrate or oxalate (Fig. 19) will soon appear and can be recognized with the microscope.

Most characteristic is the presence of Curschmann's spirals, Charcot-Leyden crystals, and eosinophilic leukocytes.

This fluid is then heated, adding crystals of sodium acetate until it becomes perfectly clear.

Microscopically, they are yellow or reddish-brown crystals, which differ greatly in size and shape.

When treated with hydrochloric or acetic acid they slowly dissolve and rhombic crystals of uric acid appear.

Crystals of calcium oxalate are insoluble in acetic acid or caustic soda.

Cystin crystals are colorless, highly refractive, rather thick, hexagonal plates with well-defined edges.

The usual forms are: (a) Ammoniomagnesium phosphate crystals; (b) acid calcium phosphate crystals; and (c) amorphous phosphates.

The sediment usually contains abundant amorphous phosphates and crystals of triple phosphate and ammonium urate.

When cool, replace the acid with water, and examine for hemin crystals with two-thirds and one-sixth objectives.