- The portion of the myotome that extends ventrolaterally to form body-wall and limb muscle, innervated by the primary ventral ramus of a spinal nerve.
- Less commonly, the somatic and splanchnic layers of the lateral mesoderm which give rise to the lining of the celom.
[hypo- + G. meros, part]
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Examples: glitazone, GI cocktail, etc.