Neural Networks in the Retina

用抗酪氨酸羟化酶（TH）和β_2-肾上腺素能受体（β_2-AdR）的抗血清，我们发现在大的无长突细胞中TH和AdR样免疫反应共存。这些发现表明含多巴胺的无长突细胞和肾上腺素能无长突细胞之间的关联。本研究还发现，TH样免疫反应阳性的无长突细胞中存在维生素D依赖性钙结合蛋白（calbindin.）。27000 kDa）样免疫反应性，表明钙结合蛋白在多巴胺能无长突细胞中起重要的突触后作用。

Using antisera against tyrosine hydroxylase (TH) and purified beta_2-adrenergic receptors (beta_2-AdR), we found that TH- and AdR-like immunoreactivities coexisted in large amacrine cells. These findings indicated an association between dopamine-containing amacrine cells and adrenergic amacrine cells. The present study also showed that amacrine cells with TH-like immunoreactivity have vitaminDdependent calcium-binding protein (calbindin. 27000 kDa)-like immunoreactivity as well, suggesting that calbindin plays an important post-synaptic role in dopaminergic amacrine cells.