| HTL | hamster tumor line; hearing threshold level; high-L-leucine transport; histotechnologist; human T-ce... |
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| ISL | inner scapular line; interspinous ligament; isoleucine |
| KG-1 | Koeffler Golde-1 [cell line] |
| LAL | left axillary line; Limulus amebocyte lysate; low air loss; lysosomal acid lipase |
| LIM | line isolation monitor |
| line-tying | <radiobiology> Connection of field lines from the end of an open-ended device (such as a mirror system) to a conducting plate. The rigidity of field lines trapped in the plate can be transferred to the high-field region of the mirror by using a cold, moderately-dense plasma in between. Line-tying helps to stabilise against interchange instabilities. (09 Oct 1997) |
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| 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) |