Results 41 to 50 of about 1,094 (155)

Leukocyte tyrosine kinase functions in pigment cell development.

open access: yesPLoS Genetics, 2008
A fundamental problem in developmental biology concerns how multipotent precursors choose specific fates. Neural crest cells (NCCs) are multipotent, yet the mechanisms driving specific fate choices remain incompletely understood.
Susana S Lopes   +13 more
doaj   +1 more source

Semi‐automated MicroED system unveils multiple polymorphs in fish‐derived guanine crystals

open access: yesActa Crystallographica Section C, EarlyView.
A semi‐automated MicroED data collection and processing system was established and shown to be suitable for the structural investigation of submicrometer‐scale biogenic crystals.Certain fish display silvery or blue colour, not through pigments, but through specialized guanine crystals that exist within iridophore cells in their skin. Within these cells,
Minato Nakazawa   +6 more
wiley   +1 more source

Changes in spectral reflexions from the iridophores of the neon tetra. [PDF]

open access: yesThe Journal of Physiology, 1982
1. The iridescent stripe of the freshwater teleost, the neon tetra, changes from green in the daytime to violet‐blue at night. 2. Spectral reflectance measurements were used to follow these colour changes. 3. Light causes a shift in reflectance to longer wavelengths in living fish and in isolated tissue from the lateral stripe.
J N, Lythgoe, J, Shand
openaire   +2 more sources

Dynamic colour change predicts movement behaviour in a diadromous fish

open access: yesJournal of Fish Biology, EarlyView.
Abstract Dynamic changes in colour and pattern facilitate key behavioural functions in animals, particularly camouflage for predator avoidance. However, the benefits of colour change depend on the environmental and behavioural contexts. We tested how colour change interacts with movement behaviour in a freshwater fish by filming individuals in an open ...
Joshua S. Barrow, John R. Morrongiello
wiley   +1 more source

Gap junctions composed of connexins 41.8 and 39.4 are essential for colour pattern formation in zebrafish

open access: yeseLife, 2014
Interactions between all three pigment cell types are required to form the stripe pattern of adult zebrafish (Danio rerio), but their molecular nature is poorly understood.
Uwe Irion   +7 more
doaj   +1 more source

Force‐Induced Synergetic Pigmentary and Structural Color Change of Liquid Crystalline Elastomer with Nanoparticle‐Enhanced Mechanosensitivity

open access: yesAdvanced Science, 2022
The ability of some animals to rapidly change their colors can greatly improve their chances of escaping predators or hunting prey. A classic example is cephalopods, which can rapidly shift through a wide range of colors.
Chang Sun   +9 more
doaj   +1 more source

Stimuli‐Responsive Hydrogels for Optical Applications: Mechanisms, Architectures, and Translational Challenges

open access: yesAggregate, Volume 7, Issue 6, June 2026.
The review discusses stimuli‐responsive hydrogels as soft optical materials that translate physical, chemical, and biological cues into refractive‐index, scattering, birefringence, diffraction, and transparency changes. It examines major stimulus classes and photonic architectures for biosensing, waveguiding, adaptive lenses, smart windows, and therapy.
Andrés Bernal‐Ballén   +2 more
wiley   +1 more source

Multiple pigment cell types contribute to the black, blue, and orange ornaments of male guppies (Poecilia reticulata). [PDF]

open access: yesPLoS ONE, 2014
The fitness of male guppies (Poecilia reticulata) highly depends on the size and number of their black, blue, and orange ornaments. Recently, progress has been made regarding the genetic mechanisms underlying male guppy pigment pattern formation, but we ...
Verena A Kottler   +5 more
doaj   +1 more source

Zebrafish Embryos to Profile Nano(bio)materials: A Modular Platform for Developmental Toxicity, Neurotoxicity, and Inflammation‐Regeneration Assays

open access: yesCurrent Protocols, Volume 6, Issue 6, June 2026.
Abstract Zebrafish embryos provide a rapid, low‐cost in vivo platform to profile the developmental, neurotoxic, and immunomodulatory effects of engineered nano(bio)materials within a single vertebrate system. This article presents a modular workflow that integrates standardized fish embryo acute toxicity (FET) testing, chemically assisted ...
Cinzia Bragato   +8 more
wiley   +1 more source

Genetics of white color and iridophoroma in "Lemon Frost" leopard geckos.

open access: yesPLoS Genetics, 2021
The squamates (lizards and snakes) are close relatives of birds and mammals, with more than 10,000 described species that display extensive variation in a number of important biological traits, including coloration, venom production, and regeneration ...
Longhua Guo   +10 more
doaj   +1 more source

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