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.
Development of the recent typical cell spheroid-based tumor chips (Reprinted with permission from Ref. [63], Copyright 2018 American Chemical Society; Reprinted with permission from Ref. [64], Copyright 2019 American Chemical Society; Reprinted with permission from Ref. [61], Copyright 2020 Elsevier; Reprinted with permission from Refs. [65,66], Creative Commons By 4.0 (https://creativecommons.org/licenses/by/4.0)).
