[word=signalling] | [□=□] □ □
[word=signalling] | [lemma=□] □ □
[word=signalling] | [tag=□] □ □
The refinement of the dorsoventral pattern on the dorsal side involves a long range signalling process , unlike the series of prepatterns of transcription factors observed along the anteroposterior axis ( 40 ) . As differentiated neurons are uncapable of mitosis , further progress on this signalling pathway ( s ) must cause an insoluble dilemma for the cells which finally die . Administration of cyclopamine to regenerating axolotl limbs results in loss of digits and this was also found in Shh knockout mice , confirming the signalling target for cyclopamine . A Taiwanese student , unfamiliar with credit cards or travelers checks , brought $ 2,000 in cash with her to Berkeley , which was promptly stolen . Health officials , on 14 November 2003 , confirmed Ebola haemorrhagic fever as the cause of 11 deaths in the northern forests , signalling the Republic of Congo 's second outbreak of Ebola haemorrhagic fever this year .