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Tag: "molds" at biology news

Hirsute Or Hairless? Two Proteins May Spell The Difference

...oint to two key actors in a signaling pathway that molds a targeted cluster of cells into a hair bud. During the budding process, overlapping signaling pathways from two adjacent embryonic cell layers—the epithelium and the mesenchyme—direct morphogenesis. The mesenchymal cells initiate the cell-to-cell “...

Scientists use manufacturing methods to reconstruct mastodon

...f UROP students and community volunteers also made molds of the bones, which took about a week for the ribs and almost a year for the skull, said biology undergraduate student Kelly Iknayan, of Gaylord, Mich., who worked on the project last year. From the molds, students and volunteers then made fiberglass...

Researchers grow stem cells from human skin

...rentiated cells were seeded onto three-dimensional molds and implanted in mice, they maintained features consistent with bone, muscle and fat tissue. "Our study shows that stem cells can be obtained from a simple skin biopsy and can be made to become three vital tissues," said Shay Soker, Ph.D., associate ...

Breakthrough: Scientists create world's tiniest organic particles

... imprint lithography with silicon, glass or quartz molds where it is difficult to eliminate this residual m...with what we call liquid Teflon, and the resulting molds look something like ice cube trays with tiny cavities in them. After that, we mold the carrier and f...

Hurricane aftermath: Infectious disease threats from common, not exotic, diseases

...leans and clean up mold growth. Some environmental molds can cause allergic reactions. ...

New factor implicated in allergy and asthma attacks

...produced by ragweed and 38 other plant pollens and molds linked to allergy and asthma attacks. Within minutes of exposure, ragweed pollen or its extract containing NADPH oxidase produce damaging reactive oxygen species in cell culture and, in experiments with mice, in their lungs and airway lining fluid. T...

Researchers make long DNA 'wires' for future medical and electronic devices

...g technology called soft lithography, where rubber molds press materials into shape. In this study, they arranged the DNA into rows of "stitches," pinstripes and criss-cross shapes. The pinstripes presented the researchers with a mystery: for some reason, thorn-like structures emerged along the strands a...

Wisconsin scientists discover a master key to microbes' pathogenic lifestyles

... a mammal, spores from a class of six related soil molds found around the world encounter a new, warmer environment. And as soon as they do, they rapidly shift gears and assume the guise of pathogenic yeast, causing such serious and sometimes deadly afflictions as blastomycosis and histoplasmosis. But how...

When the going gets tough, slime molds start synthesizing

...d prosper in challenging ecosystems." When slime molds starve, they collectively form a multicellular slu...ube. All that was left was to prove was that slime molds themselves used the newly discovered enzyme to make DIF-1. For that Noel and Austin turned to co-s...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...he groove in Scp1 much the same way that a dentist molds a filling to fit the cavity in a patient's tooth. ...

Early exposure to indoor fungus molecules may protect infants against future allergies

...esponding author of the study. "Exposure to indoor molds during infancy may be associated with respiratory symptoms, such as persistent coughing and wheezing." The UC-led team analyzed the effects of microbial exposures to both fungal glucans and endotoxins (natural compounds secreted from disease-causi...

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