Spectral karyotype (SKY)
A visualization of all of the chromosomes in the genome all together with each chromosome labeled with a different color. The SKY technique is useful for identifying chromosome abnormalities.
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- Spectrophobia
An abnormal and persistent fear of ghosts. Sufferers of spectrophobia experience undue anxiety even though they realize their fear is irrational. They may fear going into woods, empty houses or dark places and may react with alarm at strange or unexplained noises. No doubt Hollywood has enkindled spectrophobia with such films as Poltergeist, The Haunting […]
- Spectrophotometer
A device which measures the amount of ultraviolet light absorbed by a substance. For example, vitamin A absorbs ultraviolet light so that a spectrophotometer can measure within minutes with almost perfect accuracy the amount of vitamin A in a given food. The spectrophotometer, a key instrument today in biomedical laboratories, was invented in 1939 by […]
- Speculum
An instrument that is used to widen the opening of the vagina so that the cervix is more easily visible.
- Speculum, ear
A funnel shaped piece of plastic on a light source that is inserted into the auditory canal of the ear, allowing the examiner to look at the ear canal and ear drum. The auditory canal begins at the circular opening of the ear and continues a distance of about one inch [about 2 1/2 cm] […]
- Speculum, nasal
An instrument used to widen the opening of a nostril so the inside can be more easily seen. “Speculum” is the Latin word for mirror.