| 摘要 |
PROBLEM TO BE SOLVED: To provide a new hydroxyapatite(HA) calciophilic drug, carrier having large affinity for calcium and excellent in safety, and to provide a diagnostic or treating agent of a conjugate of such a HA calciophilic drug carrier with an agent for diagnostics or treatment. SOLUTION: This HA calciophilic drug carrier is a peptide having 2-15 amino acids or amino acid derivatives containing >=3 carboxyl groups in a molecule, and the other objective diagnostic or treating agent is a conjugate of the HA calciophilic drug carrier with an agent for diagnostics or treatment.
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