Results 51 to 60 of about 198,070 (204)

Association of drusen deposition with choroidal intercapillary pillars in the aging human eye [PDF]

open access: yes, 2004
PURPOSE. To determine the pattern of drusen accumulation with age and to investigate the initial sites of deposition and their relationship to choroidal capillaries in human donor eyes from the eye bank of Moorfields Eye Hospital.METHODS.
Al Hosaini, H   +5 more
core   +1 more source

Structure and function of the retinal pigment epithelium, photoreceptors and cornea in the eye of Sardinella aurita (Clupeidae, Teleostei)

open access: yesJournal of Basic and Applied Zoology, 2016
The structure of the pigment epithelium, photoreceptors and the cornea in the eye of a teleost, Sardinella aurita was examined by light and electron microscopy.
Mostafa Ali Salem
doaj   +1 more source

Electro-oculography in bilateral optic neuropathy

open access: yesBMC Research Notes, 2020
Objective Effect of bilateral, optic neuropathy on the function of retinal pigment epithelium has not been investigated extensively to date. This study aimed to determine the effect of bilateral, optic neuropathy on light peak:dark trough ratio, light ...
Padmini Dahanayake   +5 more
doaj   +1 more source

Possible involvement of cone opsins in distinct photoresponses of intrinsically photosensitive dermal chromatophores in tilapia Oreochromis niloticus. [PDF]

open access: yesPLoS ONE, 2013
Dermal specialized pigment cells (chromatophores) are thought to be one type of extraretinal photoreceptors responsible for a wide variety of sensory tasks, including adjusting body coloration.
Shyh-Chi Chen   +2 more
doaj   +1 more source

Life history and ecological genetics of the colonial ascidian Botryllus schlosseri [PDF]

open access: yes, 2015
The colonial ascidian Botryllus schlosseri is a cosmopolitan, marine filter feeder, introduced as a laboratory research organism in the 1950s. Currently, it is widely used in many laboratories to investigate a variety of biological questions.
Ballarin, Loriano   +7 more
core   +1 more source

An Atypical Migration Pattern of Tattoo Pigment

open access: yesCureus, 2023
Unwanted diffusion of pigment past the original margins of a tattoo, termed "tattoo blowout," appears as a blurred rim classically surrounding the original tattoo borders. The darkened skin is visibly noted within hours to days following the tattooing procedure.
Cao, Emily M   +4 more
openaire   +2 more sources

Dermatoscopic features of cutaneous non-facial and non-acral lentiginous growth pattern melanomas

open access: yesDermatology Practical & Conceptual, 2014
Background: The dermatoscopic features of facial lentigo maligna (LM), facial lentigo maligna melanoma (LMM) and acral lentiginous melanoma (ALM) have been well described. This is the first description of the dermatoscopic appearance of a clinical series
Jeff Keir
doaj   +1 more source

Thyroid hormone regulates distinct paths to maturation in pigment cell lineages [PDF]

open access: yes, 2019
Thyroid hormone (TH) regulates diverse developmental events and can drive disparate cellular outcomes. In zebrafish, TH has opposite effects on neural crest derived pigment cells of the adult stripe pattern, limiting melanophore population expansion, yet
Aman, Andrew J   +10 more
core   +1 more source

An endogenous crepuscular rhythm of rainbow trout (Salmo gairdneri) photomechanical movements [PDF]

open access: yes, 1982
1. The position of the epithelial pigment and cones in the retina of Salmo gairdneri was determined during extended periods of darkness in fish entrained to both artificial and natural light/dark cycles. 2. An endogenous rhythm of such photomechanical
Douglas, R. H.
core  

Frontiers in Pigment Cell and Melanoma Research

open access: yes, 2018
We identify emerging frontiers in clinical and basic research of melanocyte biology and its associated biomedical disciplines. We describe challenges and opportunities in clinical and basic research of normal and diseased melanocytes that impact current ...
Birlea, Stanca   +26 more
core   +1 more source

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