Service no. | Service scope | Service description | Reference fee | Turnaround |
1 | TEM imaging（EV） | Assess EV morphology by TEM. The default six-image set includes four fields: 1000 nm (1), 500 nm (1), 200 nm (1) and 100 nm (3). | 200 CNY/sample | 3 business days |
2 | TEM imaging (large vesicles) | Assess large-vesicle morphology by TEM. The default six-image set includes four fields: 1000 nm (1), 500 nm (3), 200 nm (1) and 100 nm (1). | 200CNY/sample | 3 business days |
We provide transmission electron microscopy (TEM) services to examine EV morphology and structure and support research into their functions and mechanisms. TEM is commonly used to obtain high-resolution images and information on morphology and size distribution.
The source describes use of the HITACHI HT7700 transmission electron microscope for EV observation. Developed for biological, pharmaceutical, nanotechnology and soft-material applications, the system combines microscope and CCD camera operation with digital imaging. The routine image fields listed are 1 μm (10,000×), 500 nm (20,000×), 200 nm (30,000×) and 100 nm (60,000×).
Instrument specifications
Resolution | 0.204 nm (lattice image at 100 kV) |
Magnification | 200×–200,000× high-contrast mode 4,000×–600,000× high-magnification mode 50×–1,000× low-magnification mode |
Accelerating voltage | 40–120 kV (0.1 kV steps) |
Maximum tilt angle | ±30° (±70° optional) |
Digital camera | 1,024 × 1,024 pixels (2,028 × 2,048 pixels optional) |
Vacuum system | TMPx1、RPx1 |
Power supply | 4kVA |
Lifeint provides EV research and application services from sample preparation, isolation and characterization to omics, functional studies, modification and scale-up. It jointly established a biomedical technology centre with Xiamen University School of Pharmaceutical Sciences, built process-development laboratories to GMP standards, and contributed to an EV expert consensus. Its service records cover more than 300 plant species.
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