There might be a weird benefit to leaving dead flies where they fall on your windowsill.
In fruit flies, the changes seemed to involve serotonin, an important neurotransmitter that carries signals between nerve cells, and one of serotonin's receptors, 5-HT2A. The researchers started here, investigating which 5-HT2A-expressing neurons might be involved in the physical effects of what the researchers call"death perception".fluorescent protein
Finally, they started artificially activating neurons in these regions in flies that had not seen dead friends until they found two that had the same effect as the death perception, named R2 and R4. So, now we know.
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