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.
Jacob (whom Iâve known for years) prefers the pronouns âtheyâ and âthem,â and so hereâs how I would write about Jacob: They have a gender identity that encompasses both male and female, and their attire ranges from pencil skirts, high heels and lipstick to blazers, bow ties and facial hair on any given day.