<thead><tr><th>Pathway</th><th>Category</th></tr></thead><tbody><tr><td><a href="http://smpdb.ca/view/SMP0000406?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Morphine Action Pathway</a></td><td>Drug action</td></tr><tr><td><a href="http://smpdb.ca/view/SMP0000405?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Codeine Action Pathway</a></td><td>Drug action</td></tr><tr><td><a href="http://smpdb.ca/view/SMP0000623?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Heroin Metabolism Pathway</a></td><td>Drug metabolism</td></tr><tr><td><a href="http://smpdb.ca/view/SMP0000407?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Heroin Action Pathway</a></td><td>Drug action</td></tr><tr><td><a href="http://smpdb.ca/view/SMP0000621?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Codeine Metabolism Pathway</a></td><td>Drug metabolism</td></tr><tr><td><a href="http://smpdb.ca/view/SMP0000622?highlight[compounds][]=DB00295&amp;highlight[proteins][]=DB00295">Morphine Metabolism Pathway</a></td><td>Drug metabolism</td></tr></tbody>