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.
Your pup will need three doses of the DHPP vaccine as a youngling. Comstock Images/Comstock/Getty Images. When it's time for your puppy's initial shots or your adult pooch's booster shots, one of the vaccines Fido will need is the DHPP. This is a combination of four different vaccines all contained in one shot.