In a composition comprising a therapeutic agent and a compound which is a trisaccharide or higher polysaccharide, that compound has the formula X\u2014Y-Zn wherein X and Z are each saccharide molecules in which none, some or all OH groups are derivatised; Y is an ester linkage to an exocyclic C atom in X; and n in an integer. The protection arm has a tape passing groove and an arm portion. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i. Upon cessation of use, the attachment plate with attached brush base with bristles automatically returns to a position immediately adjacent to the ladder rail, thereby out of the way of ladder ascension and dissention. Once the ISI effects of a channel are known, all captured signals may be corrected. The recording information reproducing apparatus according to the invention is for reproducing recording information from a recording disc on which information data has been divided and recorded into a plurality of concentric zones.