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Photoreceptor Pigments, Retinal -- See Retinal Pigments


Photosensitive protein complexes of varied light absorption properties which are expressed in the PHOTORECEPTOR CELLS. They are OPSINS conjugated with VITAMIN A-based chromophores. Chromophores capture photons of light, leading to the activation of opsins and a biochemical cascade that ultimately excites the photoreceptor cells
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Photoreceptor, Retinal -- See Photoreceptor Cells, Vertebrate


Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system
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Photoreceptor, Rhabdomeric -- See Photoreceptor Cells


Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade
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Photoreceptor, Vertebrate -- See Photoreceptor Cells, Vertebrate


Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system
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  Photoreceptors -- 3 Related Subjects   3
Photoreceptors.   13
 

Photoreceptors, Ciliary -- See Photoreceptor Cells


Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade
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Photoreceptors -- Congresses.   2
 

Photoreceptors in plants -- See Plant photoreceptors


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Photoreceptors, Microbial : Chlorophylls and Bacteriochlorophylls : Biochemistry, Biophysics, Functions and Applications / edited by Bernhard Grimm, Robert J. Porra, Wolfhart RĂ¼diger, Hugo Scheer  2006 1
Photoreceptors -- Physiology : From pigments to perception : advances in understanding visual processes / edited by Arne Valberg and Barry B. Lee  1991 1
Photoreceptors -- Physiology -- Congresses. : From pigments to perception : advances in understanding visual processes / edited by Arne Valberg and Barry B. Lee  1991 1
 

Photoreceptors, Retinal -- See Photoreceptor Cells, Vertebrate


Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system
  1
 

Photoreceptors, Rhabdomeric -- See Photoreceptor Cells


Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade
  1
 

Photoreceptors, Vertebrate -- See Photoreceptor Cells, Vertebrate


Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system
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Photorefractive Keratectomy : Refractive surgery / [edited by] Dimitri T. Azar ; associate editors Damien Gatinel, Ramon C Ghanem, Suphi Taneri  2019 1
Photorefractive materials.   7
 

Photoresist -- See Photoresists


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Photoresistors -- See Also Photoconductivity


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  Photoresists -- 2 Related Subjects   2
Photoresists.   6
 

Photorespiration, Plant -- See Plants Photorespiration


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Plants -- Photorespiration.   2
Plants -- Photorespiration -- Congresses. : Photosynthesis and photorespiration : proceedings of a conference held at Australian National University, Canberra, Australia, 23 November-5 December, 1970 / edited by M.D. Hatch, C.B. Osmond, R.O. Slatyer  1971 1
 

Photorin, Conrad, 1742-1799 -- See Lichtenberg, Georg Christoph, 1742-1799


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Photos -- See Photographs


Here are entered works that discuss photographs themselves as objects of special interest, including their classification, cataloging, copying, coloring, mounting, etc

--subdivision Photographs under subjects for works consisting of actual photographs, that is, photographic prints or digital photographs, rather than reproductions of photographs
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Photos (Computer file) : Photos : a Take control crash course / by Jason Snell  2016 1
Photosculpture. : Dark shadow / Gilbert and George the sculptors  1976 1
 

Photosensitive glass -- See Glass, Photosensitive


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Photosensitivity Disorder -- See Photosensitivity Disorders


Abnormal responses to sunlight or artificial light due to extreme reactivity of light-absorbing molecules in tissues. It refers almost exclusively to skin photosensitivity, including sunburn, reactions due to repeated prolonged exposure in the absence of photosensitizing factors, and reactions requiring photosensitizing factors such as photosensitizing agents and certain diseases. With restricted reference to skin tissue, it does not include photosensitivity of the eye to light, as in photophobia or photosensitive epilepsy
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Photosensitivity disorders -- See Also the narrower term Xeroderma pigmentosum


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Photosensitivity disorders.   9
Photosensitivity disorders -- Periodicals : Photodermatology, photoimmunology & photomedicine (Online)    1
Photosensitivity Disorders -- prevention & control : Clinical guide to sunscreens and photoprotection / edited by Henry W. Lim, Zoe Diana Draelos  2009 1
Photosensitivity disorders -- Treatment   2
 

Photosensitization -- See Photosensitivity Disorders


Abnormal responses to sunlight or artificial light due to extreme reactivity of light-absorbing molecules in tissues. It refers almost exclusively to skin photosensitivity, including sunburn, reactions due to repeated prolonged exposure in the absence of photosensitizing factors, and reactions requiring photosensitizing factors such as photosensitizing agents and certain diseases. With restricted reference to skin tissue, it does not include photosensitivity of the eye to light, as in photophobia or photosensitive epilepsy
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  Photosensitization, Biological -- 2 Related Subjects   2
Photosensitization, Biological.   5
  Photosensitizers -- 2 Related Subjects   2
 

Photosensitizing Agents -- See Also Photochemotherapy


Therapy using oral or topical photosensitizing agents with subsequent exposure to light
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Photosensitizing Agents.   2
Photosensitizing Agents -- chemistry.   2
Photosensitizing Agents -- therapeutic use.   5
Photosensitizing Agents -- therapeutic use [mesh] : Photodynamic therapy with ALA : a clinical handbook / editors, Roy Pottier [and others]  2006 1
Photosensitizing compounds.   4
 

Photosensitizing dyes -- See Photosensitizing compounds


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Photosensitizing Effect -- See Photosensitizing Agents


Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms
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Photosensitizing Effects -- See Photosensitizing Agents


Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms
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Photosensors -- See Optical detectors


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Photoshop -- See Adobe Photoshop


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