Abstract: One embodiment of an apparatus for storing dentures may include a receptacle having a base and a wall extending vertically upwardly from a periphery of the base to define an enclosure therewithin. The apparatus may further include a tray adapted to be removably received and carried within the enclosure of the receptacle. The tray may be capable of carrying the dentures thereon. Further, the apparatus may also include a cover hingedly carried by the receptacle and adapted to cover the tray received within the enclosure of the receptacle.

Abstract: The invention is a process for cell propagation of hepatitis A virus. The process involves purifying a culture of hepatitis A virus particles. These hepatitis A virus particles are used for infecting cells being cultivated in a media. The hepatitis A particles suitable for use in this invention must have a cytopathic effect in the infected host cells that are selected for culturing the hepatitis A virus. After developing the cytopathic effect in the infected cells, the hepatitis A viruses produce degeneration and lysis in the infected cells and are released into the media. Isolation of the released hepatitis A virus then occurs. The preferred cells for use in this invention are FRhK4 (foetal rhesus monkey kidney) cells. The preferred virus particles for use in this invention are hepatitis A, strain HAS-15 particles have an antigen coded by a nucleotide sequence according to FIG. 1.