Cage card example. Front side (left part): the top row contains room (7109), rack (05) and cage (1894) information. The bar color can be freely assigned by the user and may visually encode the line or any other information in a user context. Mouse-specific rows contain the mouse ID together with ear mark, sex and date of birth (first row); line and strain/background (second row); genotype data (third row) and mouse comment (fourth row). Back side (right part): the top row contains room, rack and cage number as well as a bar code representation (Code39) of the cage number. Mouse-specific columns contain bar code representations (ITF) of the mouse ID as well as the mouse ID as text together with sex and ear mark in the left column. In the right column, the origin (orig) of a mouse is denoted as 'M' (mating) or 'I' (import), followed by the respective mating or import ID. When originating from a mating, father (fa) and mother (mo) IDs are printed. The mother ID is followed by '+' when more than one mother is assigned.