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.
There is no word in French for the neuter pronoun it because French grammar knows only masculine and feminine gender. Use the masculine or feminine pronoun, il or elle, resp â¦ ectively, depending upon the gender of the antecedent. Where the gender of the antecedent is not specified, use the masculine form il.Neither. Only the nouns-and their related adjectives-are masculine and feminine in French.se the masculine or feminine pronoun, il or elle, resp â¦ ectively, depending upon the gender of the antecedent. Where the gender of the antecedent is not specified, use the masculine form il. Neither.
Possessive pronouns in French are a bit tricky and requires some close attention. They are much harder then the English equivalent of âmyâ. In French and the possessives correspond directly with the gender (masculine or feminine) or a number of objects (single or plural) to which they refer.