Amacrine Cells/metabolism; Dopamine/metabolism; Excitatory Amino Acid Agonists/pharmacology; Glutamic Acid/metabolism; Membrane Transport Proteins; Organic Anion Transporters; Receptors, N-Methyl-D-Aspartate/metabolism; Synaptic Transmission/physiology; gamma-Aminobutyric Acid/metabolism; Amacrine Cells/cytology; Amacrine Cells/drug effects; Animals; Aspartic Acid/pharmacology; Carrier Proteins/antagonists & inhibitors; Carrier Proteins/metabolism; Cell Survival/drug effects; Cell Survival/physiology; Chickens; Dopamine/pharmacology; Excitatory Amino Acid Antagonists/pharmacology; GABA Antagonists/pharmacology; GABA Plasma Membrane Transport Proteins; Glutamate Decarboxylase/metabolism; Immunohistochemistry; Isoenzymes/metabolism; Kainic Acid/pharmacology; L-Lactate Dehydrogenase/metabolism; Membrane Proteins/antagonists & inhibitors; Membrane Proteins/metabolism; N-Methylaspartate/pharmacology; Receptors, N-Methyl-D-Aspartate/drug effects; Synapses/drug effects; Synapses/metabolism; Synaptic Transmission/drug effects