The design of the hypodermic needle has changed little since 1853, when French surgeon Charles Gabriel Pravaz first attached a hollow, skinpiercing cylinder to a syringe. today, medical-device designers are using micro-scale materials to make the needles shorter and thinner, which makes for less painful needling.
Researchers presenting at the 242nd National Meeting and Exposition of the American Chemical Society this week in Denver have demonstrated a new DNA test that can measure the amount of potential carcinogens clinging to a person's DNA. But unlike previous tests that required white blood cell or urine samples and fairly intensive lab scrutiny, this one can hunt for carcinogens in a simple saliva swab.
Researchers at Stanford University just published a study in Nature that may give new hope to those looking to stop the effects of aging on the brain. The study found that when blood from a young mouse was injected into an older mouse, that older mouse enjoyed what could almost be termed a "rejuvenation effect": it began producing more neurons, firing more activity across synapses, and even suffered less inflammation.
A new heat-sensitive gel and glue combo is a major step forward for cardiovascular surgery, enabling blood vessels to be reconnected without puncturing them with a needle and thread. It represents the biggest change to vascular suturing in 100 years, according to Stanford University Medical Center researchers.