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.
The vast majority of antigens are exogenous antigens. They are introduced into the body from outside via various infections agents such as bacteria, viruses, fungi, protozoa, helminthes etc., or environmental substances such as dust mites, foodstuff, pollen etc. by inhalation, ingestion, or injection.he vast majority of antigens are exogenous antigens. They are introduced into the body from outside via various infections agents such as bacteria, viruses, fungi, protozoa, helminthes etc., or environmental substances such as dust mites, foodstuff, pollen etc. by inhalation, ingestion, or injection.