PD-L1 and PD-1 were expressed variably in DLBCLs by tumour cells and tumour-infiltrating immune cells and might be potential therapeutic targets using PD-1/PD-L1 blockade.
Polycrystalline BaTe 4 O 9 ceramic compound was investigated as a promising microwave dielectric compound for low-temperature cofired ceramics (LTCC) applications. The binary phase BaTe 4 O 9 was synthesized and subsequently densified over the temperature range of only 5001-5501C, which allows for lowtemperature cofiring with aluminum metal. The dielectric properties of BaTe 4 O 9 ceramics sintered at 5501C for 2 h were determined in the microwave region of 12-14 GHz. The dielectric constant and Q Â f product obtained were 17.5 and 54 700 GHz at 12 GHz, respectively. The temperature coefficient of resonance frequency showed a negative value of À90 ppm/1C. In terms of its evaluation for LTCC, the BaTe 4 O 9 composition was found to be chemically compatible and successfully cofired with highly conductive aluminum electrode, while maintaining good electrical performance.
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