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Tag: "patterning" at biology news

Embryonic patterning makes the feathers fly

...t’s all a question of patterning. To understand patterning on the molecular and the systems level, the researchers looked at how feather patterns are laid down in embryonic chickens. Feathers, or more properly feather buds, will appear on the skin of the developing embryo wherever fibroblast growth factor (F...

Muscle and bone from an ink-jet printer

...disease, trauma, or genetic abnormalities. Spatial patterning of stem cell differentiation through delivery of bio-inks with an ink-jet printer will offer the Pittsburgh researchers a whole new level of complexity and control. The custom built ink-jet printer, which was developed at Carnegie Mellon, can dep...

Advance helps explain stem cell behavior

...s all of the complex and interactive steps in this patterning process, Gross said. Much of this process happens during a surprisingly short time and at very early stages of embryonic development. In mice, for instance, virtually all of the types of cells are formed in 12 days, during what would correspond to ...

Evolution reveals an independent route for diversity in animal form

...Hox system is not in fact a prerequisite for axial patterning during development or for the generation of diverse animal morphology. The findings are reported in the May 9th issue of Current Biology by scientists Bernd Schierwater, Kai Kamm, and Wolfgang Jakob of Tierärztliche Hochschule Hannover, in Germany, ...

Anemone genes reveal versatile building blocks for body plans

...rogs have been found to play an unexpected role in patterning an animal with a different body plan--a simple sea anemone. Sea anemones, along with corals and jellyfish, are members of the phylum Cnidaria, and they possess a radial body plan that is distinct from the familiar bilateral body plan exhibited by v...

Cuttlefish masters of disguise despite colorblindness

...al factor in uncovering what determines camouflage patterning in cuttlefish. Despite these results, the vexing question of how cuttlefish master the task of camouflage in low-contrast, color-rich environments such as those found at shallow depths of water, remains to be answered. Mäthger and her colleagues are...

Forsyth scientists gain greater understanding of how embryos differentiate left from right

...common mechanism has been identified in left-right patterning in three distinct species. Such a discovery may h...tter. These data implicate H+-V-ATPase activity in patterning the left right axis of three different vertebrates, reveal mechanisms both upstream and downstream o...

Cholesterol gets 'thumbs up' for role in digit development

...e early 1990s and shown to have important roles in patterning the developing embryo, including proper digit patt... To try and clear up cholesterol's role in digit patterning and the Sonic hedgehog gradient, Chiang and colleagues created mice with an altered form of the Soni...

The evolution of food plants: Genetic control of grass flower architecture

...f ra2 suggests that it functions in regulating the patterning of stem cells in axillary meristems. Said Dr. Hake, "we think that ra2 is critical for shaping the initial steps of inflorescence architecture in the grass family, because the ra2 expression pattern is conserved in other grasses including rice, barl...

'Uniquely human' component of language found in gregarious birds

...ead author of the study. "If birds can learn these patterning rules, then their use does not explain the uniquen...s. These songs followed two different grammars, or patterning rules. Eight songs followed the "finite-state" rule, the simplest sort, thought to account for al...

Cornell finds natural selection in humans

... natural selection has played an important role in patterning the human genome," said the paper's lead author, Carlos Bustamante, assistant professor of biological statistics and computational biology at Cornell. The Cornell/Celera team found that genes involved in immune function, sperm and egg production, s...

Molecular mechanism of feather formation found

...he model is a simple way of explaining how feather patterning is achieved." Theoretical biologist Hans Meinhard... of the activator-inhibitor model in developmental patterning in animals years ago. Through the combined efforts of Meinhardt, Richard Prum of Yale University and...

Trio of plant genes prevent 'too many mouths'

...d stomata. "It's surprising that size and stomata patterning ?both key to plants being able to survive on dry l... Understanding the mechanisms that control stomata patterning offers insights into such questions as how plants evolved to protect themselves when they moved from...

Snapin: A protein with therapy potential for autism

...f the protein snapin in nerve branch, or dendrite, patterning and its potential as a drug target in therapies ai... department of cell biology and neuroscience. "The patterning actually affects the way a cell signals and understanding the patterning could be just as important ...

Men Estimate Men's Risks Of Common Disorders Higher Than Women Do, And Vice Versa

...fessionals operate on stereotypes about the gender patterning of certain types of health problem and health behaviour. For example, coronary heart disease tends to be perceived as a 'male disease' even though it is the leading cause of mortality amongst women in the UK. (One study found that 30 year old women w...

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