| 摘要 |
A delivery system, especially for delivery to targeted sites in the human or animal body, comprises capsids of the coat protein amino acid sequence of phage MS-2 or related phage, or a modification thereof which retains capsid-forming capability, or sufficient of said sequence or modification to retain capsid-forming capability, at least some of said capsids enclosing a moiety foreign to the genome of MS-2 or related phage.
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