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20 sats \ 2 replies \ @k00b 26 Dec \ parent \ on: Stacker Saloon
Both. Sometimes they're the same thing.
"Osteoblasts and osteoclasts are special cells that help your bones grow and develop. Osteoblasts form new bones and add growth to existing bone tissue. Osteoclasts dissolve old and damaged bone tissue so it can be replaced with new, healthier cells created by osteoblasts."
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