to investigate cellular processes difficult to study by other means. this approach has allowed us to branch out in many directions, including membrane protein ... read more full text html download pdf quantifying target occupancy of small molecules within living cells m.b. robers, r. friedman-ohana,...
can be donated every days (by a healthy person). platelets can be donated every days apart (a maximum of times a year). all blood donations are tested for hiv/aids, hepatitis b & c, syphilis and other diseases, before it is transfused. general fyi: type o- red cells can be transfused to patients of...
positions the yeast and convection does the rest. the mixing motion of the currents assures complete yeast wort contact. the yeast near the cool sides will sink and, upon hitting the conical bottom, is forced into the center where it is warmer. active yeast tends to give off heat. the hard working warmer cells...
in the embryo. the greater the radiation, the more cells were damaged. therefore, the resulting plants grown from seeds with greater exposures will show more abnormalities than those with lower exposures. teacher lesson plan: traditional split students into groups of four and give each group four sets...
operates in classical or helium-free mode. vacuum pump supplied separately. more... autosorb- isa the new autosorb- isa provides six ports for independent analysis of to samples. dedicated pressure transducers, dewar flasks, coolant level sensors, and po cells allow independent and simultaneous operation...
. many biological structures, such as skin, eyes, fur and hair contain pigments (such as melanin). animal skin coloration is often achieved with specialized cells called chromatophores, which in animals such as the octopus and chameleon can be controlled to vary the animal's colour. many conditions affect...
likely to experience premature graying (before age ) than nonsmokers. another study , in the journal of the american academy of dermatology, linked smoking to premature graying in young men. the mechanism, similar to one proposed for stress, is that free radicals (produced by smoking) may damage the cells...
or exhaustive exercise, such as running a marathon, significantly increases oxidative damage. the body adapts to exercise over time by boosting its own antioxidant activity, thus decreasing oxidative damage. free radicals are good in some ways. some are involved in immunity, communication between cells...
this essential micronutrient affects the development and maintenance of red blood cells, nerve cells, and normal myelination (covering) of nerve cells. it also aids in the production of dna, rna, and neurotransmitters. what are the signs of a vitamin b deficiency?...