Staphylococcus epidermidis and lactobacillus are two types of resident bacteria. Staphylococcus epidermidis is a type of bacteria that lives on the skin, while lactobacillus is a bacteria that resides in the intestines.
Staphylococcus epidermidis helps protect the body from other forms of staphylococcus bacteria. Lactobacillus helps with the digestion and absorption of foods. Resident bacteria are bacteria species that live on the human body. These microbes cause no harm and can even help protect the body from disease. Resident bacteria can be found in the skin, the digestive tract, the upper respiratory system, the mucous membranes and the urogenital system.