scientists ( had grown/grew/have grown)a perfectly compatible ear in a lab and (grafted/have grafted/had grafted) to on to a patient, I. what they(have said/had said/said) was a world first in regeneration medicine.
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Backed blade, core, point, triangle,
lunate and trapeze are the main Mesolithic tools. However, some tools used earlier, like scraper, burin and choppers, continue. Art: The people of this age practiced painting. Their paintings depicted birds, animals, and human beings.
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