摘要:
Optically active compounds of formula (I), wherein n is 1 or 2 and m is 0, 1, 2 or 3, have antiviral activity. Com pounds of the formula wherein at least one of the internucleotide phosphorothioate linkages is of the Sp configuration pos sess increased antiviral activity and/or metabolic stability.
摘要:
A filter assembly (10) comprises a reservoir (12) and a receptacle (14). A lower portion of the reservoir has a substantially cylindrical dependent wall (18) and an upper portion of the receptacle has a substantially cylindrical wall (20). The walls are dimensioned so that one wall is receivable within the other. One wall has two projections extending therefrom which are engageable within two recesses formed in the other wall; so as to secure the reservoir and receptacle together. An annular seal, located in use between the reservoir and receptacle, is provided with a number of radially extending ribs on its inner surface which are deflected when the seal is compressed.
摘要:
A plastics filterware unit has a filter membrane (22) made at least in part of cellulose nitrate welded to a support member (18) in the filterware unit.
摘要:
A carrier for affinity chromatgraphy comprises an insoluble carrier and antibodies which are modified by activated polyethyleneglycol and immobilized on the insoluble carrier.