| The next step in this process is malnutrition, since active transport of nutrients become impaired. |
| The active transport pathway is mediated by transporters and is divided into influx and efflux. |
| The pharmacokinetics of metformin are largely determined by its active transport by key organic cation transporters. |
| The electrocytes establish a charge difference across the cell membranes, presumably by active transport of ions. |
| Uric acid, formed from nucleic acids, is reabsorbed from filtrate by active transport, and a small portion is actively secreted into the urine. |
| Complex processes regulate both passive and active transport across the nuclear membrane. |
