Basic Science The esterase method of detecting leukocytes in a urine sample relies on the fact that esterases are released from lysed urine granulocytes (neutrophils). In the dipstick method ...

Long-chain parabens (eg, butylparaben) are metabolized by esterases in the subcutaneous tissue and are the least reactive. Short-chain parabens (methylparaben and propylparaben) are metabolized by ...

Calcein AM is membrane-permeable and is converted to fluorescent calcein by active intracellular esterases, whereas ethidium is excluded by intact membranes, but taken up through the damaged ...

The sustainable conversion ofrenewable bioresources (e.g, plant-derived biomass) to valued chemicals and productsremains one of the key challenges in the transition from fossil fuel to greeneconomies.