first proposed by German physician Heinrich Wilhelm von Waldever- Hartz (1836-1921) in 1891 who said that the nervous system is comprised of neurons which run length-to-length but do not penetrate each other.
first proposed by German physician Heinrich Wilhelm von Waldever- Hartz (1836-1921) in 1891 who said that the nervous system is comprised of neurons which run length-to-length but do not penetrate each other.