concept of lactic acid dehydrogenase write on sticky notes with stethoscope on wooden table

colorful handwritten wooden note message office desk business paper notepad concept text table book design sign wood workplace background education lactic dehydrogenase chemical chemistry structure formula molecular molecule lactate acidosis atomic flat structural organic science atom serum acid polylactic oxygen carbon hydrogen muscle lactide chiral racemic polyester compound bioplastic write sticky notes stethoscope isolated