Actinic keratoses that develop on the lips are referred to as actinic cheilitis. The clinical appearance of an actinic keratosis is that of a small (several millimeters), red scaly papule or plaque, with induration and thickening of the epidermis.
1 Location: Ideally, the probe should be in close proximity to the forward or reverse primer, but should not overlap with a primer-binding site on the same strand. 2  Probes can be designed to bind to either strand of the target. 3  Melting temperature (Tm): Preferably, probes should have a Tm 6â8Â°C higher than the primers.
This page describes how a mass spectrum is produced using a mass spectrometer. How a mass spectrometer works. The basic principle. If something is moving and you subject it to a sideways force, instead of moving in a straight line, it will move in a curve-deflected out of its original path by the sideways force.n outline of what happens in a mass spectrometer Atoms and molecules can be deflected by magnetic fields-provided the atom or molecule is first turned into an ion. Electrically charged particles are affected by a magnetic field although electrically neutral ones aren't.