Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Reproduction of the first electron micrograph ever that indicated the existence of lysosomes (arrows), as originally published in 1956 by Novikoff and colleagues. The sample represents a liver fraction that also contains mitochondria (MT) and endoplasmic reticulum (ER). Reproduced from Novikoff et al. (1956)
