additionalType - health-lifesci.schema.org

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core + health-lifesci (Health and Lifesciences Extension): terms relating to healthcare, medicine and the life sciences.

# additionalType

#### Thing > Property > rdf:type > additionalType

An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.
Usage: Between 10,000 and 50,000 domains
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- 'additionalType' is mentioned in layer: core

Values expected to be one of these types
`URL`

Used on these types
`Thing`

Super-properties
`rdf:type`

Examples
Example 1
Without Markup Microdata RDFa JSON-LD

    <!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
     <div>
       <h3>Le concerto</h3>
       <table summary="Bibliographic Details">
         <tr>
           <th>Main Author: </th>
           <td>Ferchault, Guy</td>
         </tr>
       </table>
     </div>
     <table summary="Holdings details from Anytown City Library">
       <!-- Example of a copy available for loan -->
       <tr>
         <th>Copy </th>
         <td>Available
           <div>Barcode: <span>CONC91000937</span></div>
           <div>Call number: <span>780 R2</span></div>
           <div>Library: <span>Anytown City Library</span></div>
         </td>
       </tr>
     <table>

     <!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
     <div itemscope itemtype="http://schema.org/Book" itemid="#record">
       <link itemprop="additionalType" href="http://schema.org/Product"/>
       <h3 itemprop="name">Le concerto</h3>
       <table summary="Bibliographic Details">
         <tr>
           <th>Main Author: </th>
           <td itemprop="author">Ferchault, Guy</td>
         </tr>
       </table>
     </div>
     <table summary="Holdings details from Anytown City Library">
       <!-- Example of a copy available for loan -->
       <tr itemscope itemtype="http://schema.org/Offer">
         <th>Copy </th>
         <td>Available
           <link itemprop="availability" href="http://schema.org/InStock">
           <div>Barcode: <span itemprop="serialNumber">CONC91000937</span></div>
           <div>Call number: <span itemprop="sku">780 R2</span></div>
           <div>Library: <span itemprop="offeredBy" itemtype="http://schema.org/Library" itemid="http://library.anytown.gov.uk" >Anytown City Library</span></div>
           <link itemprop="businessFunction" href="http://purl.org/goodrelations/v1#LeaseOut">
           <link itemprop="itemOffered" href="#record">
         </td>
       </tr>
     <table>

     <!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
     <div vocab="http://schema.org/" resource="#record" typeof="Book Product">
       <h3 property="name">Le concerto</h3>
       <table summary="Bibliographic Details">
         <tr>
           <th>Main Author: </th>
           <td property="author">Ferchault, Guy</td>
         </tr>
       </table>
     </div>
     <table vocab="http://schema.org/" summary="Holdings details from Anytown City Library">
       <!-- Example of a copy available for loan -->
       <tr typeof="Offer">
         <th>Copy </th>
         <td>Available
           <link property="availability" href="http://schema.org/InStock">
           <div>Barcode: <span property="serialNumber">CONC91000937</span></div>
           <div>Call number: <span property="sku">780 R2</span></div>
           <div>Library: <span property="offeredBy" typeof="Library" resource="http://library.anytown.gov.uk" >Anytown City Library</span></div>
           <link property="businessFunction" href="http://purl.org/goodrelations/v1#LeaseOut">
           <link property="itemOffered" href="#record">
         </td>
       </tr>
     <table>

    <script type="application/ld+json">
    {
      "@context":  "http://schema.org/",
      "@id": "#record",
      "@type": "Book",
      "additionalType": "Product",
      "name": "Le concerto",
      "author": "Ferchault, Guy",
      "offers":{
          "@type": "Offer",
          "availability": "http://schema.org/InStock",
          "serialNumber": "CONC91000937",
          "sku": "780 R2",
          "offeredBy": {
              "@type": "Library",
              "@id": "http://library.anytown.gov.uk",
              "name": "Anytown City Library"
          },
          "businessFunction": "http://purl.org/goodrelations/v1#LeaseOut",
          "itemOffered": "#record"
        }
    }
    </script>

Schema Version 3.0