Any of several weedy composite herbs that produce a pollen to which many people are allergic. Of all allergy sufferers in the US, 75 percent are allergic to ragweed.

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  • Rale

    An abnormal lung sound that can be heard through a stethoscope. Rales may be sibilant (whistling), dry (crackling), or wet (sloshy), depending on the amount and density of fluid refluxing back and forth in the air passages.

  • Ramsay Hunt syndrome

    Occupational compression neuritis of the deep palmar branch of the ulnar nerve.

  • Ramus

    In anatomy, a branch, such as a branch of a blood vessel or nerve. For example, the ramus acetabularis arteriae circumflexae femoris medialis is the branch of an artery that goes to the socket of the hip joint. The plural of ramus is rami.

  • Ramus of the mandible

    One of the two prominent, projecting back parts of the horseshoe-shaped lower jaw bone.

  • Random

    Determined solely by chance.

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