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