UN 3373 UN 2814 and UN 2900
UN 3245 UN 3291

Dangerous goods are liquids, gases or solids that can harm people, animals, other living organisms, property, or the environment. Dangerous goods include materials that are flammable, radioactive, explosive, corrosive, oxidizing, bio-hazardous, pathogenic, asphyxiating or allergic. Dangerous goods are often indicated by diamond shaped signage. Mitigating the risks associated with hazardous materials may requires the application of safety precautions during their transport, storage, use and disposal. Most countries regulate hazardous materials by law. They are subject to several international treaties as well. The United Nations Economic and Social Counsel issues the UN recommendations on the Transport of Dangerous Goods, which form the basic for most regional and national regulatory schemes. Individual airline and governmental requirements are incorporated with this by the International Air Transport Association. IATA DGR (Dangerous Goods Regulations) is widely used.

They are 9 hazard classes:

For this site are important:

Class 6: Toxic and Infectious Substances

Class 6.2: Biohazard Substances

The World health Organization (WHO) divide this class in two categories:
    Category A: Infectious
    Category B: Biological Substance (like samples of pathology specimens, virus cultures, solid or liquid specimens)

Class 9: Miscellaneous (like Dry Ice)

Reference: WHO (updated June 2017) and Wikipedia