FITC (389 g/mol) was one of the first dyes which was used for fluorescence microscopy and served as an origin for further fluorescent dyes like Alexa FluorÂ®488. Its fluorescence activity is due to its large conjugated aromatic electron system, which is excited by light in the blue spectrum.
Body odor is not catching. If the body odor is due to an infection, the infection may be contagious, such as a sexually transmitted disease. Inherited conditions may be passed on to children through the genes.ody odor is the term used for any unpleasant smell associated with a person's body. People usually associate body odor with sweat, but sweat by itself does not give off an odor.
a fetid smell associated with stale perspiration. Freshly secreted perspiration is odorless, but after exposure to the atmosphere and bacterial activity at the surface of the skin, chemical changes occur to produce the odor. Common body odor usually can be eliminated by bathing with soap and water.Body odors can also be the result of discharges from a variety of skin conditions, including cancer, fungus, hemorrhoids, leukemia, and ulcers. See also bromhidrosis.ebaceous gland secretions from the skin contribute to these odors. Eating garlic or onions or taking certain drugs may add to the odors produced by sweat glands, but the major sources of body sweat odor are the volatile fatty acids, steroids, and amines emitted by apocrine glands.