Cell Culture Labware (EZSPHERE® for Spheroid Formation)

Three dimensional (3D) cell culture systems have gained in popularity as invaluable tools in broad applications of cell biology. 3D multi-cellular cell aggregates (spheroids) can be formed by using a low attachment culture surface. However, variability in forming spheroids has been a persistent problem. EZSPHERE is specifically designed to form a large number of uniformly sized spheroids and Embryoid Bodies (EBs).


  • The surface of EZSPHERE is coated with very low binding 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer.
  • EZSPHERE has a lot of evenly designed micro wells on the surface. Inoculated cells drop into the micro wells and form uniformly sized spheroids.
  • Spheroids can be formed efficiently in the round shape wells.

Product Information


EZSPHERE is a unique micro-fabricated plastic vessel and very useful for mass-production of EBs with uniform size.

EZSPHERE Variety Pack (35 mm Dish)

Product No. 4000-900SP 4000-901SP 4000-902SP
Diameter (µm) approx. 500 approx. 200 approx. 500
Depth (µm) approx. 100 approx. 100 approx. 200
No. of wells approx. 2,700 approx. 9,200 approx. 2,700
Product No. 4000-903SP 4000-904SP 4000-905SP
Diameter (µm) approx. 800 approx. 800 approx. 1,400
Depth (µm) approx. 400 approx. 300 approx. 600
No. of wells approx. 1,300 approx. 700 approx. 260


EB formation, proliferation and differentiation protocols

EB formation, proliferation and differentiation protocols

Fluorescence microscopy image of EBs obtained on the EZSPHERE (A). EBs created on the 35 mm dish type EZSPHERE were imaged and analyzed with the digital image analyzing software “Image J” to determine size distribution. Histogram of EB size (diameter) distribution. Fluorescence microscopy revealed that the almost EBs were alive with uniform size (B).

EB-size control with micro-well sizes or inoculating cell demsities

Two types of EZSPHERE #900 and #905 with micro-wells about 500 µm and 1,400 µm in diameter, respectively, were used to analysis the effect of the micro-well size or inoculated cell density on the EB sizes (A). Inoculation of iPSCs as 400 or 2,000 cells per micro-well on the same type of EZSPHERE #900 resulted in the formation of EBs with different sizes, while inoculating iPSCs as 9,000 cells per micro-well on the another EZSPHERE #905 resulted larger size of EBs (B). (Scale bars: 400 µm)

Proliferation of iPSCs with maintaining pluripotency

When iPSCs were cultured on EZSPHERE with feeder-free cell culture medium (mTeSR1), the formed EBs could proliferate at a good rate (A) with high viability (B). In the flow cytometry, these cells maintained high capacity of undifferentiated state (C).

Induction of dopaminergic neurons from the EBs

Differentiation of EBs into dopaminergic neuron was attempted by using the EZSPHERE continuously throughout a series of steps from the EB-formation to induction of midbrain dopaminergic neuron (A). Immunofluorescence staining revealed differentiation of the EBs into midbrain neuron, which tyrosin hydroxylase (TH: white arrows) and FOXA2 positive (B). Flow cytometry analysis (FACS) with Oct3/4 antibody indicated that there was almost no iPSCs remained without differentiation (C).

Induction of cardiomyocyte from the EBs

Differentiation of EBs, which prepared on the EZSPHERE, into cardiomyocytes was attempted (A). It was observed that most of EBs showed contracting (indicated with yellow arrow) at day 15 (B)-(1). EBs were dissociated and plated on gelatin coated slide, followed by α-actinin staining and sarcomere alignment (high magnification) was observed (B-2). Flow cytometry for cardiac troponin T (cTnT) positive cells revealed high differentiation efficiency (C).


  1. Hiroyuki Koike, Ran-Ran Zhang, Yasuharu Ueno, Keisuke Sekine, Yun-Wen Zheng, Takanori Takebe, Hideki Taniguchi Nutritional modulation of mouse and human liver bud growth through a branched-chain amino acid metabolism Development 2017 144: 1018-1024; doi: 10.1242/dev.143032
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    Application references of AGC tissue culture products Sep. 2015
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    Microfabric Vessels for Embryoid Body Formation and Rapid Differentiation of Pluripotent Stem Cells
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EZSPHERE® for Spheroid Formation pdf (PDF 1.2MB)


Efficient Embryoid Body Formation from Human iPS Cells using Novel Microfabric Vessels (Poster from the 18th Takeda Science Foundation Symposium on Bioscience)
pdf (PDF 5.2MB)

An Innovative Method of Embryoid Body Formation Using Novel Microfabric Vessels
(Poster from World Conference on Regenerative Medicine, Leipzig 2015)
pdf (PDF 4MB)


iPS spheroid formation in EZSPHERE devices

iPS spheroid formation in EZSPHERE (pdf)

Ordering information

Product Name Well Size (µm) No. of Wells Product No. Qty.
EZSPHERE SP Dish 35 mm Diameter: 400-500
Depth: 100-200
2,700/dish 4000-900SP 10
EZSPHERE SP Dish 60 mm 6,500/dish 4010-900SP 10
EZSPHERE SP Dish 100 mm 17,000/dish 4020-900SP 10
EZSPHERE SP 6-Well Plate 2,700/well* 4810-900SP 5
EZSPHERE SP 96-Well Plate 100/well* 4860-900SP 5
EZSPHERE SP Dish 35 mm Type 902 2,700/dish 4000-902SP 10
EZSPHERE SP Dish 35 mm Type 903 Diameter: 800
Depth: 400
1,300/dish 4000-903SP 10
EZSPHERE SP Dish 35 mm Type 904 Diameter: 800
Depth: 300
700/dish 4000-904SP 10
EZSPHERE Variety Pack (35 mm Dish) 6 PC 4000-9VP 1 set

*Number of spheroid wells per large well