r0005">Estrogen receptor alpha is expressed in the membrane of midbrain astrocyte cultures.
r0010">Estrogen rapidly actives PI3 kinase signaling in mouse midbrain astrocyte cultures.
r0015">Estrogen neuroprotection of neurons requires PI3 kinase signaling in astrocytes.
r0020">Estrogen neuroprotection of neurons is indirect through estrogen action in astrocytes.