【正文】 cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of A ino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection of Synthesis and/or collection of amino acids is critical for cell survival. They not only serve as the building blocks for proteins but also as starting points for the synthesis of many important cellular molecules including vitamins and nucleotides. Synthesis of Amino Acids Synthesis and/or collection o