Voters returned nearly 64 million mail-in ballots before Election Day, a pandemic-driven record that is certain to make for a more complicated vote count this year but could also reshape American elections for years to come.

There are reasons for believing that the mutation rates to auxotrophy are in general higher than the rates to prototrophy.

To understand this name, note that the helicity is, roughly speaking, the spin in the direction of motion.

In electron micrographs, the tiny rod-shaped endosymbionts (1.2 x 0.25–0.35 μm in size) were not surrounded by a symbiontophorous vacuole and were located in the peripheral host cytoplasm, stratified in the host cortex in between the trichocysts or just below them.