Most luminophores consist of conjugated π systems or transition-metal complexes. Examples include transition-metal complexes such as tris(bipyridine)ruthenium(II) chloride, whose luminescence comes from an excited (nominally triplet) metal-to-ligand charge-transfer (MLCT) state, which is not a true triplet state in the strict sense of the definition and colloidal quantum dots, whose emissive state does not have either a purely singlet or triplet spin. However, some luminophores cannot be classified as being exclusively fluorophores or phosphors. Luminophores can be further classified as fluorophores or phosphors, depending on the nature of the excited state responsible for the emission of photons. Luminophores can be either organic or inorganic. In chemistry, a luminophore (sometimes shortened to lumophore) is an atom or functional group in a chemical compound that is responsible for its luminescent properties. JSTOR ( August 2017) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. It is composed mainly of loosely arranged collagen fibers.This article needs additional citations for verification. The papillary layer is the thinner of the two dermal layers. The papillary layer is the upper layer of the dermis, just below the basement membrane that connects the dermis to the epidermis above it. Disinfected areas are also quickly recolonized by bacteria residing in deeper areas such as hair follicles and in adjacent areas of the skin. Even if the skin is disinfected, no amount of cleaning can remove all of the microorganisms it contains. For example, when a patient is prescribed antibiotics, it may kill off normal bacteria and allow an overgrowth of single-celled yeast. However, if the balance of microorganisms is disturbed, there may be an overgrowth of certain species, and this may result in an infection. In general, the normal microorganisms living on the skin keep one another in check and thereby play an important role in keeping the skin healthy. \): The bacterium Staphylococcus epidermidis is a common microorganism living on healthy human skin
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