3d
acid
amino
ammonium
atom
atomic
beet
beta
betain
betaine
biology
bond
c5h11no2
carbon
cationic
chemical
chemistry
composition
compound
drawing
education
formula
glycine
hydrogen
illustration
line
methyl
model
molecular
molecule
nitrogen
nutritional
oxygen
quaternary
schematic
science
skeletal
structural
structure
study
sugar
supplement
tmg
trimethyl
trimethylglycine
zwitterion
zwitterionic
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