1Elisa M, Paola B. Sonic hedgehog in CNS development: one signal, multiple outputs[J]. TINS, 2002, 25: 89-95.
2Karen SH, Matthew PS. Sonic hedgehog in the nervous system: functions, modifications and mechanisms[J]. Curr Opin in Neurobiol, 2002, 12: 57-63.
3Dorota C, Betina P, Jose RG, et al. Sonic hedgehog signaling in the developing and adult brain[J]. J Physiol, 2002, 96: 9-16.
4Britto J, Tannahill D, Keynes R. A critical role for sonic hedgehog signaling in the early expansion of the developing brain[J]. Nat Neurosci, 2002, 5:103-110.
5George W. The function of cholesterol in embryogenesis[J]. J Nutr Biochem, 1999, 10:188-192.
6Capano CP, Pozzo PD, Porzio U. Epigenetic cues in midbrain dopaminergic neuron development[J]. Neurosci Biobeh Rev, 2000, 24:119-124.
7Marigo V, Roberts DJ, Lee SM, et al. Cloning, expression, and chromosomal location of SHH and IHH: two human homologues of the Drosophila segment polarity gene hedgehog[J]. Genomics, 1995, 28(1):44-51.
8Kim JH, Auerbach JM, Gomez JR, et al. Dopamine neurons derived from embryonic stem cells function in an animal model of Parkinson's disease[J]. Nature, 2002, 20: 418:50-56.