Abstract: A respirator assembly e.g. for NBC protection is formed from two separate sub-assemblies. The first sub-assembly comprises a flexible hood (or other suitable headgear), a rigid mounting ring and a peripheral face seal. The second sub-assembly comprise a face plate with lens, oronasal mask and inlet and outlet valves, and is demountably attachable to the ring. The first sub-assembly can be worn on its own with the user breathing ambient air through the front end, the second sub-assembly being added if and when a hazard is encountered. The positioning of the face seal in the first sub-assembly means that a comfortable and reliable fit can be ensured when the sub-assembly is donned prior to a mission, but the user is relieved of the physiological burden of wearing the complete respirator unless and until protection is required.

Abstract: Peptides previously disclosed as useful for preventing HIV from binding to cell binding sites have now been shown to have thymoleptic qualities and to be useful for tretment of psoriasis in patients who lack antibodies against HIV.

Abstract: The present invention relates to methods of treating mental disorders and memory deficits not caused by HIV infection. The methods involve administration of a thymoleptic effective amount of defined linear peptides to patients. The peptides can be administered for example, as a powder or a solution obtained by dissolving a powder in a pharmaceutically acceptable solvent.