Cite this page

| Share

Viktor Hamburger

experimental embryologist who analyzed the developing nervous system. In 1954, he and two colleagues, Rita Levi-Montalcini and Stanley Cohen, discovered the first trophic factor.

Information Please® Database, © 2007 Pearson Education, Inc. All rights reserved.

• 
  • Calculator
  • Spelling Checker
  • Place Finder
  • Distance Calculator
  • Periodic Table
  • Conversion Tool
  • Perpetual Calendar
  • Year by Year
  • Fact Monster

24 X 7

Private Tutor

	24 x 7 Tutor Availability
	Unlimited Online Tutoring
	1-on-1 Tutoring

Explore 11th Grade Math , Online Math Tutor