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.
the nodes are caused by an immunologically-mediated vasculitis caused by circulating immune complex depo-sition in the skin.7 A fair amount of evidence supports both explanations, therefore, the actual pathogenesis of Oslerâs nodes remains a mystery. Diagnosis and Differential Diagnosis Oslerâs nodes are usually associated with subacute bacterial endocarditis and appear late in the disease course. However, the sign may also be found in other conditions, including bacteremia, septic endarteritis, typhoid fever, gonococcemia, and systemic lupus ery-thematosus.6,7 Oslerâs nodes appear suddenly, are quite