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.
Le is used for masculine nouns, La is used for feminine nouns, Les is used for plural nouns (both masculine or feminine), and L' is used when the noun is singular and begins with a vowel or silent h (both masculine or feminine).ost nouns that express people or animals have both a masculine and a feminine form. For example, the two words for the actor in French are l'acteur and l'actrice. However, there are some nouns that talk about people or animals whose gender is fixed, regardless of the actual gender of the person or animal.
A gender-specific pronoun is a pronoun associated with a particular grammatical gender, such as masculine, feminine, or neuter, or with a social gender (or sex), such as female or male. Examples include the English third-person personal pronouns he and she.he English language has gender-specific personal pronouns in the third-person singular. The masculine pronoun is he (with derived forms him, his and himself); the feminine is she (with derived forms her, hers and herself); the neuter is it (with derived forms its and itself).