You have to make these theories very realistic in anatomical terms.

In its official post mortem on the crisis, the International Monetary Fund now agrees that debt restructuring should have been undertaken earlier.

Lymph vessels that carry lymph to a lymph node are called the afferent lymph vessel, and one that carries it from a lymph node is called the efferent lymph vessel, from where the lymph may travel to another lymph node, may be returned to a vein, or may travel to a larger lymph duct.

It has often been suggested that it had anatomical features that enabled it to adapt better than most animals to the atmospheric conditions that were created by the Permian Triassic extinction event and which persisted through the Early Triassic low concentrations of oxygen and high concentrations of carbon dioxide.