As Virchow was uncertain of the cause of the white blood cell excess, he used the purely descriptive term leukemia (Greek: white blood) to refer to the condition. Further advances in the understanding of acute myeloid leukemia occurred rapidly with the development of new technology. In 1877, Paul Ehrlich developed a technique of staining blood films which allowed him to describe in detail normal and abnormal white blood cells. Wilhelm Ebstein introduced the term ''acute leukemia'' in 1889 to differentiate rapidly progressive and fatal leukemias from the more indolent chronic leukemias.
The flag was designed by Andrew Carlisle Johnson in 1911 and adopted by the Colorado General Assembly on June 5 of the same year. However, the legislature did not specify the size of the C or the exact shade of blue or red.n a 2001 survey of 72 state, provincial, and territorial flags conducted by the North American Vexillological Association, Colorado's flag was ranked number 16.
Soon after gold was discovered near Denver, the region around Pikes Peak became the Colorado Territory. Other names, such as Colona, Jefferson, Osage and even Idaho, were suggested and discarded in favor of Colorado, Spanish for red in reference to the color of the water of the Colorado River.he Colorado quarter depicts a sweeping view of the state's rugged Rocky Mountains with evergreen trees and a banner carrying the inscription Colorful Colorado.. The coin also bears the inscriptions Colorado and 1876.. Colorado's Rocky Mountains are home to some of the Nation's most majestic natural wonders.