This Regulation of the Minister of Agriculture and Rural Development is composed of 34 paragraphs and three Annexes. It concerns the keeping of animals in experimental units and breeding units. They shall be kept in rooms for animals, cages, playpens or paddocks inside or outside rooms. The Regulation specifies types of rooms related conditions. Annex 1 concerns temperature in rooms for individual species of animals. Annex 2 specifies detailed conditions of concentration of animals. Annex 3 specifies recommended quarantine period for some species of animals.