The change to agar was a marked improvement. The jelly is so effective that it is still an invariable ingredient in what is known today as the “Koch’s plating technique” or the “culture plating method.” As Koch himself noted in 1909: “These new methods proved so helpful…that one could regard them as the keys for the further investigation of microorganisms…Discoveries fell into our laps like ripe fruits.”
The tree behind the grid
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Tens of millions watched on television as Lovell and two other astronauts splashed back down into the Pacific Ocean, a moment which has become one of the most iconic in the history of space travel.