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.
The first official national flag of Texas, adopted on December 10, 1836, was blue with a central yellow star. The present state flag was originally adopted on January 25, 1839, as the second national flag of the Republic of Texas.he state flag of Texas is similar to the Chile National Flag. The flag of Texas was designed and adopted on 25 January 1839, whereas Chile's flag was adopted much earlier on 18 October 1817.