As with the series' parent show Wallace and Gromit, there are many allusions to other aspects of popular culture and movies such as Star Wars, The Lion King, E.T.: The Extra-Terrestrial, The Matrix, and Pulp Fiction. 1  These include: 2  Shirley's training in the episode Shape Up with Shaun is based on the film Rocky.
Many pathogenic bacteria exist in nature as multiple antigenic types or serotypes, meaning that they are variant strains of the same pathogenic species. For example, there are multiple serotypes of Salmonella typhimurium based on differences in cell wall (O) antigens or flagellar (H) antigens.any pathogenic bacteria exist in nature as multiple antigenic types or serotypes, meaning that they are variant strains of the same pathogenic species. For example, there are multiple serotypes of Salmonella typhimurium based on differences in cell wall (O) antigens or flagellar (H) antigens.
1 Lymphocytes produce antibodies which attach to the antigens of a particular type of bacteria or virus. 2  This may destroy the pathogen or make it easier for a phagocyte to ingest. 3  Different organisms have different antigens so a different antibody is needed to recognise each different type of antigen.rotein that is produced by lymphocytes (white blood cells) and that attaches to a specific antigen. Antigen. Molecule on the surface of a pathogen that identifies it as a foreign invader to the immune system.