What year did rudolf virchow contribute to the cell theory

1855

Explanation:

Virchow in 1855 published the Omnis cellula e cellula which means cells arises from Pre existing cells.Virchow used this theory that cells arises from Pre existing cells to lay the groundwork for cellular pathology

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

area of focus