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The Biopsy That Changed the Ulcer Question - Spanish C1

Observation, culture and treatment together changed the explanation of many ulcers.

Observar bacterias obligó a cambiar la pregunta sobre la úlcera

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Level C1 Reading focus

What you'll learn

Substantive clauses for observation, causal inference, evidential requirements and limits on generalization.

The new explanation rested on converging evidence from tissue, culture and treatment outcomes.

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