Process for {HEAD ~ the preparation} of microspherical sintered bodies of hydroxyapatite and a chromatographic packing material comprising {TAIL ~ the microspherical sintered bodies} of hydroxyapatite 
Process for { HEAD ~ the preparation } of microspherical sintered bodies of hydroxyapatite and a chromatographic packing material comprising { TAIL ~ the microspherical sintered bodies } of hydroxyapatite
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH