| abstract |
(57) [Summary] Lipophilic fine particles having an average particle size of 0.1 to 200 µm, including an active ingredient and a lipophilic substance selected from the group consisting of protein or peptide drugs and antigens, sufficiently retain the activity of the active ingredient. It releases the active ingredient in vivo over time over a prolonged period when formulated in the form of oil dispersions or oil-in-water emulsions. |