Actin Cytoskeleton|Actins|Adaptor Proteins, Signal Transducing|Cell Adhesion Molecules|HeLa Cells|Hippocampus|Histocytochemistry|Humans|Immunoblotting|Intracellular Signaling Peptides and Proteins|Metabolic Networks and Pathways|Microfilament Proteins|Models, Biological|Nerve Tissue Proteins|Neurons|Phosphoproteins|Pseudopodia|Reproducibility of Results|Signal Transduction