C0 1 microorganism.
C0 10 1 microbial resources and taxonomy.
C0 10 10 1 bacterial resources, classification and phylogeny.
C0 10 102 actinomycetes resources, classification and phylogeny.
C0 10 103 fungal resources, classification and phylogeny.
C0 10 104 virus resources and classification.
C0 102 Microbial physiology and biochemistry.
0020 1 microbial physiology and metabolism.
Therefore, everyone must choose the application code accurately, and don't let your hard work lose the opportunity because of choosing the wrong code.