“Proteins are complicated, finicky molecules that are notoriously difficult to produce in their crystal form. But without gravity, fluid convection lessens, the molecules move more slowly and temperature can be more precisely controlled. That yields fewer crystal defects, enhanced crystal size and uniformity, according to an Eli Lilly & Co. spokesperson. A study published in 2022 by researchers from Butler University in Indianapolis found that 90% of various types of crystals produced in space had one or more improved properties, including many desirable to drugmakers.”

From Bloomberg.