3d
acid
air
atom
atomic
background
bisphosphonate
bubble
carbon
ch6o6p2
chemical
chemistry
composition
compound
conjugate base
connect
connection
diphosphonate
drug
element
formula
gamma rays
glass
graph
group
hydrogen
icon
line
mdp
medronate
medronic acid
methylene diphosphonate
methylenediphosphonic acid
microscope
model
molecular
molecule
nitrogen
pharmaceutical
phosphate
radioactive
science
sign
sphere
structure
technology
transparent
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