English: "a Germination rates were close to 100% in all sources of Apollo lunar regolith and indistinguishable from rates in JSC-1A simulant. Two representative wells for JSC-1A and each Apollo site are shown. b The seedlings thinned from each well on day 6 or 8 indicated that root growth in lunar regolith is not as robust as in JSC-1A. c While germination was uniform among controls and lunar sites, the lunar regolith-grown seedlings did not thrive as compared to the JSC-1A controls. The diameter of the culture plate wells is 12.5 mm (scale bar provided in c). All microscope images in b are shown to the same scale (scale bar shown in the Apollo 17 image)."