The pattern specification process that results in the subdivision of the left/right axis in space to define an area or volume in which specific patterns of cell differentiation will take place or in which cells interpret a specific environment.
limb epidermis stratification +
midbrain-hindbrain boundary initiation
neural plate regionalization +
neural tube patterning +
periodic partitioning +
petal epidermis patterning
proximal/distal pattern formation +
R8 cell-mediated photoreceptor organization
radial pattern formation +
regionalization involved in semicircular canal formation