The Process of Weakening a Pathogen to Be Used as a Vaccine

question 21

Multiple Choice

The process of weakening a pathogen to be used as a vaccine is called

• A) thinning
• B) propagation
• C) extraction
• D) attenuation

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Definitions:

NMR

Nuclear magnetic resonance, a spectroscopic technique used to observe the local magnetic fields around atomic nuclei, valuable in structural determination of molecules.

IR

Infrared, a region of the electromagnetic spectrum used in spectroscopy to identify molecular vibrations and thereby determine the presence of specific functional groups in a sample.

Septet

A splitting pattern in NMR spectroscopy indicating seven adjacent hydrogens.

Doublet

A pair of closely related spectral lines or energy levels, often observed in spectroscopy due to splitting of a single level into two by interaction effects.