Weinman's design of Liberty striding towards the Sun for the half dollar proved difficult to perfect, and Treasury Secretary William G. McAdoo, whose department included the Mint, considered having Barber create his own design.
Feline immunodeficiency virus (FIV) is a type of virus called a retrovirus. It is in the same family as feline leukemia virus (FeLV) and human immunodeficiency virus (HIV, the virus that causes AIDS). It attacks the immune system, and as a result, the cat is unable to fight off various infections and cancers. Approximately 2.5% of cats in the United States are infected with FIV.
Forced expiratory volume over 1 second (FEV 1) is a dynamic measure of flow used in formal spirometry. It represents a truer indication of airway obstruction than does peak flow rate. Although peak flow rate usually correlates well with FEV 1, this correlation decreases in patients with asthma as airflow diminishes.