info:
  slots:
    mod:
      - name: rna
        required: true
        description: Gene expression counts.
        slots:
          var: &global_var
            - name: gene_symbol 
              type: string
              description: Identification of the gene.
              required: true
            - name: feature_types
              type: string
              description: The full name of the modality.
              required: true
            - name: genome
              type: string
              description: Reference that was used to generate the data.
              required: true
      - name: prot
        required: false
        description: Protein abundancy
        slots:
          var: *global_var
      - name: "vdj"
        required: false
        description: VDJ transcript counts
        slots:
          var: *global_var



