Abstract: A patient interface includes a frame assembly including connectors operatively attachable to headgear, a cushion assembly provided to the frame assembly and including a seal-forming structure structured to form a seal with the patient's nose and/or mouth, and an air delivery connector provided to the frame assembly and operatively connected to an air delivery tube for supplying the air at positive pressure along an air flow path. The cushion assembly is structured to releasably connect to the frame assembly independently of the air delivery connector. The air delivery connector is structured to releasably connect to the frame assembly independently of the cushion assembly.

Abstract: There is provided a substrate assembly for culturing cells, wherein the substrate assembly comprises: a plurality of edible fibres, wherein each fibre has an internal channel running along its length; a first support at a first end of the plurality of edible fibres; a second support at a second end of the plurality of edible fibres; wherein at least one of the first support and second support allows fluid communication across the support into the internal channels. Also provided is a method of culturing cells.

Abstract: A rack for sample tubes, the rack comprising a box lid and a box frame; at least one tube holder layer that has a matrix of open-ended apertures for receiving the sample tubes, wherein the at least one tube holder layer is constructed from a corrugated material; and a tube locking layer that has a matrix of open-ended apertures, aligned with the matrix of open-ended apertures of the at least one tube holder layer, which each include one or more projections extending into the aperture for locking received sample tubes against rotation relative to the tube locking layer; wherein the tube locking layer is positioned between the at least one tube holder layer and the bottom of the box frame.