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 the bacteria in the body are rendered harmless by the protective effects of the immune system, and some are beneficial. However, several species of bacteria are pathogenic and cause infectious diseases, including cholera, syphilis, anthrax, leprosy, and bubonic plague.f bacteria form a parasitic association with other organisms, they are classed as pathogens. Pathogenic bacteria are a major cause of human death and disease and cause infections such as tetanus, typhoid fever, diphtheria, syphilis, cholera, foodborne illness, leprosy and tuberculosis.