Iowa State scientists demonstrate first use of nanotechnology to enter plant cells
...lls through a process called endocytosis the cell swallows or engulfs a molecule that is outside of it. The biologists attempted to mimic that process by removing the wall of the plant cell (called making protoplasts), forcing it to behave like an animal cell and swallow the nanoparticle. It didnt work. T...USGS at Society of Environmental Toxicology and Chemistry
...ong-lived to study within a reasonable time. Tree swallows overcome many of these research problems. Large numbers of breeding birds can be attracted to a site because they will readily nest in man-made nest boxes. They are also relatively easy to capture, return to the same breeding site year after year, ...Duke study examines evolutionary consequences of bluebird aggression
...tree swallow that she placed near a nest box. Tree swallows are a rival species known to compete with bluebird...der to avoid injury to the birds, she enclosed the swallows in cages placed near individual nest boxes. She observed the bluebirds' reactions from a nearby blin...Case biologists show that what a neuron can do is a function of mechanical context
..., called the "hinge," that exerts no force in weak swallows can pull the grasper back during strong swallows. This means that the motor neuron for the hinge, B7, affects behavior in one context, but not in another. These studies provide the first demonstration of Bernstein's hypothesis in a behaving animal, a...Worms know bad food when they smell it
...make ideal worm food, others are toxic. "The worm swallows them and then they establish an infection inside the worm's gut and they proliferate there. It's exactly like food poisoning," Bargmann explained. If the worm has ingested enough of the bacteria, it can die quickly, but milder cases allow the worm to...Looks matter to female barn swallows
...l Science (Sept. 30, 2005). "The bad news for male swallows is the mating game is never over," said lead autho...ty-red. Like many songbirds, half of all male barn swallows typically care for at least one young chick that was actually fathered by another bird. The research......of radiation for reproduction and survival of barn swallows Hirundo rustica from Chernobyl." Barn swallows are long-distance migratory birds, which nest across Europe, providing researchers with numerous pop...