| LL | large lymphocyte; lateral leminiscus; left lateral; left leg; left lower; left lung; lepromatous [in... |
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| SCE | secretory carcinoma of the endometrium; sister chromatid exchange; split hand-cleft lip/palate ectod... |
| TLA | thymus leukemia antigen; tissue lactase activity; tongue-to-lip adhesion; translaryngeal aspiration;... |
| UCLP | unilateral cleft of lip and palate |
| lip pits | Malformations of the lip seen in unilateral or bilateral depressions or fistulae. May be hereditary or associated with cleft lip and/or palate. (05 Mar 2000) |
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| lip reflex | A pouting movement of the lips provoked in young infants by tapping near the angle of the mouth. (05 Mar 2000) |
| lip sulcus | A furrow between the developing lip and gum. Synonym: labiodental sulcus, lip sulcus, primary labial groove. (05 Mar 2000) |
| lower lip | The muscular fold bounding the opening of the mouth inferiorly. Synonym: labium inferius oris. (05 Mar 2000) |
| low lip line | The lowest position of the lower lip during the act of smiling or voluntary retraction, the lowest position of the upper lip at rest. (05 Mar 2000) |