atom
atomic
background
biology
black
blackboard
board
calcitriol
carbon
chalk
chemical
chemistry
cholecalciferol
class
colecalciferol
composition
compound
d3
deficiency
diet
drawing
formula
health
hormone
hydrogen
medical
medicine
model
molecular
molecule
organic
oxygen
rickets
school
science
secosteroid
sign
skeletal
structural
structure
substance
supplement
symbol
text
vitamin
vitamin d
white
word
定額
Vitamin D D3 structural chemical formula, drawing on a chalk black board, School chemistry class. Cholecalciferol, colecalciferol, C27H44O molecule.の素材 [FY310159197966]
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