Soils have a natural characteristic called the cation exchange capacity (CEC) that allows them to hold (and exchange) cations (e.g., Ca+2 or Na+). These cations are held tight enough on the CEC that ...
https://doi.org/10.2307/3759967 • https://www.jstor.org/stable/3759967 Copy URL Stipe tissues from 18 species of macrofungi collected in the greater Yellowstone ...
THE clinical application of cation-exchange resins provides a new means of controlling the sodium content of the body. Several reports on their uses and limitations in edematous states have been ...