{TAIL ~ A chromatographic packing material}, which comprises {HEAD ~ microspherical sintered bodies} of hydroxyapatite prepared according to the process 1 
{ TAIL ~ A chromatographic packing material } , which comprises { HEAD ~ microspherical sintered bodies } of hydroxyapatite prepared according to the process 1
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH