Blackboard with the chemical formula of Thyrosine
Schlüsselwörter
blackboard,
chalk,
text,
signs,
write,
blackboard,
scripture,
handwriting,
letter,
lettering,
dark background,
written,
black,
illustration,
chemistry,
science,
drawing,
writing,
chemical,
formula,
molecular,
structure,
graphic,
structural,
scientific,
symbol,
element,
molecular,
technology,
research,
pattern,
medicine,
medicals,
amino acid,
amino,
acid,
protein,
dietary,
photosynthesis
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