Edward Jenner (top right) is often called the "Father of Immunology"
One of Gloucestershire's most famous scientists has been immortalised in a new set of Royal Mail stamps.
Edward Anthony Jenner (17 May 1749 to 26 January 1823) studied his natural surroundings in Berkeley, and is widely credited as the pioneer of smallpox vaccine.
He is sometimes referred to as the "Father of Immunology" and his discovery has "saved more lives than the work of any other man".
NEW STAMPS FEATURE:
Robert Boyle - chemistry
Sir Isaac Newton - optics
Benjamin Franklin - electricity
Edward Jenner - vaccination
Charles Babbage - computing
Alfred Russel Wallace - evolution
Sir Joseph Lister - antiseptic surgery
Ernest Rutherford - atomic structure
Dorothy Hodgkin - crystallography
Sir Nicholas Shackleton - earth science
The stamps celebrate the 350th anniversary of The Royal Society.
The Royal Society is the world's oldest scientific academy in continuous existence.
To this day, Fellowship of The Royal Society is one the greatest honours that can be conferred on any scientist.
The 10 first class stamps, which are of split-stamp design, feature 10 significant Royal Society figures whose portraits are paired with "dramatic and colourful imagery representing their achievements".
Non-UK citizens - such as one of the United States' Founding Fathers, Benjamin Franklin, and the New Zealand-born physicist Ernest Rutherford - also feature on the stamps.