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“I’ll pick ones made of physiological salt solution,” she said.

The heart of the recent demonstration was that of a turtle, removed from the reptile while alive, freed of all extraneous tissue and suspended in a physiological salt solution exactly duplicating body conditions.

He was able in the first place, like Rindfleisch, to produce the exit of the nuclei from the cells by the addition of "physiological" salt solution to fresh blood, and is of the opinion that the exit of the nucleus from the erythroblasts only takes place artificially.

The staining also succeeds in "surviving" organs, and is best effected by allowing small pieces to float in physiological salt solution, to which a trace of neutral red is added, under plentiful access of air.

Dilute with physiological salt solution on a glass slide and examine with a compound microscope.