Table 1: Summary of the main developmental changes in adipose tissue during early life.

Stage of developmentProliferative phasePreparatory phaseThermogenic phaseLipogenic phase

Primary adipose tissue characteristicsPreadipocyteBrown adipose tissueBrown adipose tissueWhite adipose tissue
FunctionCellular multiplication necessary to form adipose tissue depotAcquisition of large amounts of uncoupling protein 1Rapid activation of uncoupling protein 1 in order to prevent hypothermiaLipid deposition and storage
Most abundant geneAntigen identified by monoclonal antibody ki-67Long form of prolactin receptorUncoupling protein 1Leptin