Amino Acid Sequence 4 Amyloid beta-Protein Precursor 4 Animals 4 Base Sequence 4 Blotting, Western 4 Brachyura 4 Central Nervous System 4 Chasmagnathus granulatus 4 Cloning, Molecular 4 DNA, Complementary 4 Drosophila melanogaster 4 Immunohistochemistry 4 Immunoprecipitation 4 Male 4 Memory 4 Molecular Sequence Data 4 RNA, Messenger 4 Reverse Transcriptase Polymerase Chain Reaction 4 Western blotting 4 amino acid sequence 4 amino terminal sequence 4 amyloid precursor protein 4 animal 4 animal experiment 4 animal tissue 4 antenna I neuropil 4 antenna II nerve 4 article 4 association cortex 4 associative memory 4