Field stain

It is used for staining thick blood films in order to discover malarial parasites.

Field's stain is a version of a Romanowsky stain, used for rapid processing of the specimens.

[1] Field's stain consists of two parts - Field's stain A is methylene blue and Azure 1 dissolved in phosphate buffer solution; Field's stain B is Eosin Y in buffer solution.

Field stain is named after physician John William Field, who developed it in 1941.

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