ramon y cajal's theory enables us to understand this obstacle better, perhaps, than any other.
ramon y cajal has described and pictured a special kind of neuroglia cells for the gray and another for the white matter.
Ramòn y Cajal Ra·mòn y Ca·jal (rä-môn' ē kä-häl'), Santiago. 1852-1934. Spanish histologist. He shared a 1906 Nobel Prize for research on the nervous system.