Modified amino acid compounds useful in the delivery of active agents are provided. The active agents can be peptides, such as rhGH. Methods of administration, such as oral, subcutaneous, sublingual, and intranasal administration, are provided, and methods of preparation of the modified amino acid compound are provided.

 
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> Certain substituted polyketides, pharmaceutical compositions containing them and their use in treating tumors

> Antibodies binding the TNF related protein, TNF-X
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