Schiefertafel mit der chemischen Formel von Acetylcholin
Schlüsselwörter
annoy,
chemistry,
formula,
chalk,
chemical,
structure,
hand,
board,
text,
plate,
write,
blackboard,
blackboard,
drawing,
illustration,
drawn,
graphic,
signs,
technology,
chemical,
laboratory,
science,
symbol,
studying,
concept,
molecular,
connection,
atom,
handwriting,
slate
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