US [C] UK [C] ----- analyze 3 analyse 0 analyzed 4 analysed 0 center 1 centre 0 characterization 2 characterisation 0 characterized 2 characterised 0 destabilizes 1 destabilises 0 destabilizing 1 destabilising 0 fetal 1 foetal 0 finalized 1 finalised 0 hematopoietic 1 haematopoietic 0 hypothesized 1 hypothesised 0 internalization 1 internalisation 0 labeled 7 labelled 0 polymerization 2 polymerisation 0 recognized 1 recognised 0 signaling 41 signalling 0 stabilization 4 stabilisation 0 stabilize 6 stabilise 0 stabilized 2 stabilised 0 stabilizing 2 stabilising 0 tumor 1 tumour 0 utilized 8 utilised 0 visualize 2 visualise 0 visualized 1 visualised 0 while 8 whilst 0 -----