5 codes match "medical research", led by Manufacturing (section C).

2100 Class Manufacture of pharmaceuticals, medicinal chemical and botanical products

C Manufacturing > 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations > 210 Manufacture of pharmaceuticals

Includes: Manufacture of medical diagnostic preparations, including pregnancy tests; manufacture of medical impregnated wadding, gauze, bandages, dressings etc.

2660 Class Manufacture of irradiation, electromedical and electrotherapeutic equipment

C Manufacturing > 26 Manufacture of computer > 266 Manufacture of irradiation

Includes: Manufacture of medical laser equipment; manufacture of electro medical ventilators

7210 Class Research and experimental development on natural sciences and engineering

N Professional, scientific and technical activities > 72 Scientific research and development > 721 Research and experimental development on natural sciences

Includes: Research and development on biotechnology; research and development on natural sciences

8220 Class Activities of call centres

O Administrative and support service activities > 82 Office administrative, office support and other business support > 822 Activities of call centres

Includes: Conducting telephone interviews for market and opinion research surveys on a contract or fee basis - web contact centres

7120 Class Technical testing and analysis

N Professional, scientific and technical activities > 71 Architectural and engineering activities; technical testing and analysis > 712 Technical testing and analysis

Excludes: Testing of animal specimens, for sanitary reasons and not associated with food production, see 7500 - diagnostic imaging, testing and analysis of medical...