By Anne Marie Helmenstine, Ph.D. Lipids are a diverse group of fat-soluble biological molecules. Here is a look at different types of lipids and where they are found.1  Triacylglycerols or Triglycerides. 2  The largest class of lipids goes by different names: triacylglycerols, triglycerides, glycerolipids, or fats.y Anne Marie Helmenstine, Ph.D. Lipids are a diverse group of fat-soluble biological molecules. Here is a look at different types of lipids and where they are found.
Lymph nodes become swollen in response to illness, infection, or stress. Swollen lymph nodes are one sign that your lymphatic system is working to rid your body of the responsible agents. Swollen lymph glands in the head and neck are normally caused by illnesses such as: 1  ear infection.
Lymph nodes are part of the lymphatic system and are located throughout the body, including the neck, armpits, abdomen and groin. There are many causes for swollen lymph nodes.Most commonly, lymph nodes become swollen due to an infection, such as a viral upper respiratory infection like the common cold. Sometimes, lymph node swelling is caused by an underlying condition.auses of swollen lymph nodes. There are many causes for swollen lymph nodes. Most commonly, lymph nodes become swollen due to an infection, such as a viral upper respiratory infection like the common cold.