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.
Years ago, puppies would be weaned from their mother's and sold at 6 weeks of age. This is no longer acceptable practice. The breeder's code of ethics say a puppy should be 8 weeks of age, before being sold or adopted.There are 15 states which have laws governing the age by which a puppy may be sold or adopted to a new family and in most states it is 8 weeks of age.At Crooked Creek Cairn Terriers, puppies may go home at 8-9 weeks of age if being picked up, and may be shipped at 9-10 weeks of age.here are 15 states which have laws governing the age by which a puppy may be sold or adopted to a new family and in most states it is 8 weeks of age. At Crooked Creek Cairn Terriers, puppies may go home at 8-9 weeks of age if being picked up, and may be shipped at 9-10 weeks of age.