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.
Roman Mars/Greek Aries represents the masculine archetype; Isidore sees a relationship between the words Mars and male, from Latin masculus, diminutive of mas, male. Isidore thinks the word marriage is also a relative: âBut 'husband' (maritus) without an additional term means a man who is married.