[1] Univ Bologna, Inst Human Anat, I-40126 Bologna, Italy
[2] Univ Ferrara, Inst Human Anat, I-44100 Ferrara, Italy
[3] CNR, Inst Cytomorphol, Chieti, Italy
[4] CNR, Inst Cytomorphol, I-40126 Bologna, Italy
[5] IOR, Bologna, Italy
[6] Univ Bologna, Dept Biol, I-40126 Bologna, Italy
[7] Univ G dAnnunzio, Inst Human Morphol, Chieti, Italy
[8] Univ Auckland, Sch Med, Dept Mol Med, Auckland 1, New Zealand
[9] Univ Utrecht, CBLE, NL-3508 TC Utrecht, Netherlands
[10] NHLBI, Lab Cell Signalling, NIH, Bethesda, MD 20892 USA