One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but when we talk about osmosis, only the solvent molecules (water molecules) cross the membrane.
Familial Cancer Program. The Familial Cancer Program at Norris Cotton Cancer Center provides counseling for people who may have an increased risk of cancer because of their personal and/or family history. The issues surrounding inherited risk and genetic testing are complicated.
Relative risk. Consider an example where the probability of developing lung cancer among smokers was 20% and among non-smokers 1%. This situation is expressed in the 2 Ã 2 table to the right. Here, a = 20, b = 80, c = 1, and d = 99. Then the relative risk of cancer associated with smoking would be R R = a / c / = 20 / 100 1 / 100 = 20. {\displaystyle RR={\frac {a/}{c/}}={\frac {20/100}{1/100}}=20.} Smokers would be twenty times as likely as non-smokers to develop lung cancer. The alternative term risk ...