Second Stimulus - RT @Janechimeziee: it is in a way not living so it does not respond to stimulus. DENTIN; this is the second layer of the teeth and it is ma…

10:34am PDT - May 10th, 2022

RT @Janechimeziee: it is in a way not living so it does not respond to stimulus. DENTIN; this is the second layer of the teeth and it is ma…

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