Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment.
It will be good for up to six months, in the vacuum seal, if stored in the refrigerator. If frozen in the vacuum seal, it can last for about 1 year. Once the sample is removed from the vacuum seal, it should not remain at room temperature for more than 18 hours. It will keep in the refrigerator, unsealed, for 30 days.
That 5hit said: â. this is what i want to know. how long does real urine last. the job i have now does a lot of random test so i would need a system that will allow me to carry urine around while at work, and i will need it to warm itself up to body temp or stay at body temp untill needed.