Intravitreous
In the vitreous, the fluid behind the lens in the eye. As in an intravitreous injection.
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- Intrinsic
1. An essential or inherent part of a something such as a structure. 2. Coming from within, from the inside. Proteins have intrinsic signals that govern their transport and localization in the cell. From the Latin intrinsecus meaning situated on the inside. The opposite of intrinsic is extrinsic.
- Introitus
An entrance that goes into a canal or hollow organ.
- Introitus, facial canal
The entrance to the facial canal, a passage in the temporal bone of the skull through which the facial nerve travels.
- Intron
Part of a gene that is initially transcribed into the primary RNA transcript but is later removed from it when the exon sequences on either side of it are spliced together. Also known as intervening sequence.
- Intubate
To put a tube in, commonly used to refer to the insertion of a breathing tube into the trachea for mechanical ventilation. For example, as a life-saving measure, an emergency room physician might intubate a patient who is not breathing adequately so that the lungs can be ventilated.