The chemical reactions and pathways resulting in the breakdown of lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent.

The chemical reactions and pathways resulting in the breakdown of fatty acids with a chain length of less than C6.

The chemical reactions and pathways resulting in the breakdown of any fatty acid with a chain length of between C6 and C12.

The chemical reactions and pathways resulting in the breakdown of monoacylglycerol, any ester of glycerol in which any one of its hydroxyl groups has been acylated with a fatty acid, the other being non-esterified.

Any mechanism of immune avoidance that directly affects the host immune system, e.g. blocking any stage in host MHC class I and II presentation. The host is defined as the larger of the organisms involved in a symbiotic interaction.

The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.