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Fun Blog
New vs Used: Things under a scanning electron microscope (SEM)
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poisin_kat
· 6 years ago
·
FIRST
The comparison in needles makes me wonder where the missing metal went
2
mrdad01
· 6 years ago
The metal isn't missing that is actually built-up biomatter (blood, skin cells, and so on) the tip however is bent over and dulled which is why used needles hurt more than new.
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