Figure 6
From: Flatbed epi relief-contrast cellular monitoring system for stable cell culture

Monitoring of spheroid formation. (A) Schematics of the two-step moulding for fabrication of the spheroid culture chip. The chip was made of oxygen-permeable PDMS with 100 microwells (φ 500 μm). (B) The spheroid chips were placed in a 6-well plate. The polystyrene bottoms of the 6-well plate were removed to facilitate oxygen supply through the bottoms of the spheroid chips. (C) Scanning electron microscopic image of MIN6 spheroids formed on a spheroid culture chip. The scale bar is 200 μm. (D) Representative eRC-CMS image of MIN6 spheroids on the chip. The scale bar is 200 μm. (E) Time-lapse imaging of spheroid formation. MIN6, PANC-1, and MIN6-m9 cells in randomly selected microwells were continuously monitored with eRC-CMS after seeding. The scale bar is 200 μm.