Malgorzata M. Kamocka from the Indiana Center for Biological Microscopy (Indiana University--Purdue University Indianapolis, Indianapolis, IN) and Milena Romanello for their helpful suggestions during immunofluorescence analysis, Marta Deganuto and Laura Cesaratto for cell cycle and apoptosis studies, and Damiano Fantini for help in immunoprecipitation analysis. We also thank Bruce Demple for critically reading the manuscript, making helpful suggestions, and sharing some unpublished data from his lab.

This work was supported by grants from Italian Ministry of Education, University and Research (FIRB_RBRN07BMCT and PRIN2008_CCPKRP_003) and the Italian Association for Cancer Research (IG10269) to G.T.; from the National Natural Science Foundation of China to M.L. (NSFC_30900553); from the Italian Ministry of Education, University and Research (PRIN2008_CCPKRP_002 and FIRB2008_RBNE08YFN3_003) to A.S.; and from the National Institute of Health and National Cancer InstituteWe've right to shoot down US bombers outside our airspace, says North Korea

New York : North Korea reserves the right to shoot down US warplanes flying outside its airspace, Foreign Minister Ri Yong Ho said on Monday. "Since the US declared war on our country, we will have every right to make countermeasures," Efe quoted Ri as saying.

Those measures, the North Korean minister said, include "the right to shoot down US strategic bombers even when they are not inside the airspace border of our country."

The declaration was made by the Northeast Asian regime two days after the Pentagon announced that military aircraft had flown near North Korea's coast with the aim of sending a "clear message" to Pyongyang.

"The whole world should clearly remember it was the US who