 A large amount of D-Ser can  be detected in the brain, where it plays an important regulatory role in the development of the  central nervous system and is closely associated with learning, memory, and mammalian behavior (Snyder and Kim, 2000).
<fluency>  A large amount of D-Ser can  be detected in the brain, where it plays an important regulatory role in the development of the  central nervous system and is closely associated with learning, memory, and mammalian behavior (Snyder and Kim, 2000).
 A large amount of D-Ser can be detected in the brain, where it plays an important regulatory role in the development of the “ central nervous system and is closely associated with learning, memory, and mammalian behavior (Snyder and Kim, 2000).