【医】有无学说

presence and absence equalizer absence presence filtering and prediction theory source and sink theory use and disuse theory absence debtor absence regulation theory of maxima and minima Real Presence commercial presence presence chamber presence and absence hypothesis the presence or absence of anthocyanin pigments in the presence of light and chlorophyll Absence of nausea and vomiting Absence of head and hands Longitudinal absence of radius and ulna Congenital absence of arm and forearm Absence of atrial and ventricular septa congenital absence of the breasts and nipples Absence of head and spinal column