The cells of the innate system recognize and respond to pathogens in a generic way, but, unlike the adaptive immune system (which is found only in vertebrates), it does not confer long-lasting or protective immunity to the host.ll white blood cells (WBC) are known as leukocytes. Leukocytes are different from other cells of the body in that they are not tightly associated with a particular organ or tissue; thus, they function similar to independent, single-cell organisms.
Ideally, the age to bring home a puppy is when heâs between seven and twelve weeks old. This is considered the critical socialization period in a puppyâs life, the time when he learns the most about his environment and begins to adjust to his surroundings.
Overview. 8 weeks old is the minimum age that you should bring a Yorkie puppy into your home. In the majority of areas, including the United States, it is illegal to sell a puppy that is less than 8 weeks old.ou will want your new Yorkie puppy to be as comfortable as possible. Investing in a high quality puppy dog bed is recommended. It is also recommend to place down baby blankets in the bed, so that if your puppy has an accident, you can wash the blanket and put another one down in its place.