BIOSEGURIDAD

SE DIERON LAS NORMAS EN EEUU

ADECUADA PARA LA LABOR EN LABORATORIO.

ESTABLECI TECNICAS ANTISEPTICAS

UTILIZO ACIDO C.ARBOLICO COMO DESINFECTANTE

MEDIOS DE MICROORGANISMOS PARA OCASIONAR UNA ENFERMEDAD

TEORIA GERMINAL DE LAS ENFERMEDADES CONTAGIOSAS

OBRA"EL CONTAGIO"

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Mary, Paris

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Cats, Rain

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Family, Class

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Candlestick

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He is taller than she is.

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She is the prettiest princess.

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He, They

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His, Your

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This, These

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Itself, Himself

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Each other, one another

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Which, Who

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Which, Where

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None, Several

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The breakfast on my plate.

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A car in the parking lot.

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This stew is savory and delicious.

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Although it was raining, I went out.

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