Results 151 to 160 of about 198,070 (204)

Modeling flower pigmentation patterns

ACM Transactions on Graphics, 2021
Although many simulation models of natural phenomena have been developed to date, little attention was given to a major contributor to the beauty of nature: the colorful patterns of flowers. We survey typical patterns and propose methods for simulating them inspired by the current understanding of the biology of floral patterning.
Lee Ringham, Andrew Owens, Mikolaj Cieslak, Lawrence D. Harder, Przemyslaw Prusinkiewicz   +4 more
openaire   +1 more source

Pigment Patterning in Teleosts

2021
Pigment patterns in adult fish show astonishing diversity, reflecting their likely roles in camouflage, kin- and mate-selection, and display. Adult pigment pattern formation has only been explored extensively in the zebrafish, Danio rerio, and here we summarize the experimental studies that help to define a myriad of cell–cell interactions that result ...
Jennifer Owen, Christian Yates, Robert N. Kelsh   +2 more
openaire   +1 more source

Pigmentation pattern formation on snakes

Journal of Theoretical Biology, 1991
We consider a cell-chemotaxis model mechanism for generating some of the common, simple and complex, patterns found on the skin of snakes. By investigating the pattern generation potential of the model we show that many of the more complex patterns might result from growth of the integument during the pattern formation process.
J D, Murray, M R, Myerscough
openaire   +2 more sources

Pattern Dystrophy of the Pigment Epithelium

American Journal of Ophthalmology, 1977
Three generations of a family showed alterations in the retinal pigment epithelium along with mild visual disturbance. Younger members had granular pigment dispersed beneath the fovea while older members showed a reticular pigment pattern. The electro-oculogram was subnormal in most affected individuals, but visual fields, color vision, dark adaptation,
M F, Marmor, B, Byers
openaire   +2 more sources

Patterned Pigmentation in Children

Pediatric Clinics of North America, 2010
The terms pigmentary mosaicism or patterned dyspigmentation describe a spectrum of clinical findings that range from localized areas of dyspigmentation with no systemic findings to widespread dyspigmentation with associated neurologic, musculoskeletal, and cardiac abnormalities, and other sequelae that can lead to early demise. Given this wide spectrum,
openaire   +2 more sources

Clinical Patterns of Facial Pigmentation

2021
Introduction: Pigmentary disorders of the skin are a great concern to the patient, more so when it involves the face. It is one of the common clinical presentations to the dermatology OPD. Facial pigmentation may be multifactorial and in some etiology may be known by a detailed history.
M. Shahana, M. Rashiqah Khan, M. Rehan Khan   +2 more
openaire   +1 more source

CHLOROPLAST PIGMENT PATTERNS IN DINOFLAGELLATES¹

Journal of Phycology, 1975
SUMMARYThe chlorophylls and carotenoids of 22 species of dinoflagellates were analysed by thin layer chromatography, using 2‐dimensional sucrose plates, and 1‐dimensional polyethylene plates for chlorophylls c1and c2. Peridinin was the major carotenoid in 19 of the species, while fucoxanthin was the major carotenoid in 3.
S. W. Jeffrey, Margarete Sielicki, F. T. Haxo   +2 more
openaire   +1 more source

Pigment Pattern Formation by Contact-Dependent Depolarization

Science, 2012
Cell culture experiments reveal that direct interactions between pigment cells play a key role in skin pattern formation.
Masafumi, Inaba, Hiroaki, Yamanaka, Shigeru, Kondo   +2 more
openaire   +2 more sources

Pattern dystrophies of the retinal pigment epithelium

Acta Ophthalmologica Scandinavica, 1996
ABSTRACT Pattern dystrophies of the retinal pigment epithelium are infrequent fundus abnormalities arranged in various patterns of dots, lines and branches. The basic lesion appears to be yellow deposits of abnormal lipofuscin accumulated within degenerated retinal pigment epithelium cells.
S, Daniele, A, Carbonara, C, Daniele, G, Restagno, F, Orcidi   +4 more
openaire   +2 more sources

PATTERN DYSTROPHY OF THE RETINAL PIGMENT EPITHELIUM

Retina, 1990
The authors describe a family in which one member had pattern dystrophy of the retinal pigment epithelium. The proband also had neovascular membranes which resulted in decreased visual acuity. Two other family members had abnormal electro-oculographic findings, but a clinical normal-appearing fundus that could represent an early stage of the disease ...
T, Shiono, A, Ishikawa, S, Hara, M, Tamai   +3 more
openaire   +2 more sources