Proceedings of the National Academy of Sciences of the United States of America, Vol. 90, No. 8 (Apr. 15, 1993), pp. 3378-3382 (5 pages) ...

Like humans, bacteria in most ecosystems live with limited resources. Therefore they are constantly faced with investment decisions: should they enhance motile behavior and thus be able to exploit new ...

An intense but short-term exposure to cannabis vapor lowered sperm counts and slowed sperm movement, or motility, not only in the directly exposed male mice but also in their sons, according to a new ...

Spontaneous mutants of Rhizobium meliloti L5-30 defective in motility or chemotaxis were isolated and compared against the parent with respect to symbiotic competence. Each of the mutants was able to ...