Lymph is a fluid that circulates throughout the body in the lymphatic system. It forms when tissue fluids/blood plasma (mostly water, with proteins and other dissolved substances) drain into the lymphatic system. It contains a high number of lymphocytes (white cells that fight infection).
Puppies normally get their first shots around 8 weeks old, but they can be given earlier if needed (ie with stray, abandoned pups or those who were formula fed). Three sets of combination vaccinations (a shot that protects against more than one disease) given at 3 week intervals. 8 weeks - first round.
Puppy Vaccines at a glance. 1  1All puppies will need some required vaccines, usually given in 3 sets, 3-4 weeks apart. 2  2Optional non-core vaccines can protect your puppy from health concerns in your area, like Lyme disease. 3  3Puppy vaccinations are often given in a combo vaccine, called the DAPPV.