Abstract: The present invention provides a human CD16+ natural killer cell line and a CAR-expressing human CD16+ natural killer cell line. These human CD16+ natural killer cell line and a CAR-expressing human CD16+ natural killer cell line does not include synthetic, genetically modified or purposely deliberately delivered polynucleotide encoding the CD16 receptor and are non-tumorigenic cell lines. Therefore, this human CD16+ natural killer cell line and a CAR-expressing human CD16+ natural killer cell line might provide considerable long-term safety for disease treatment.

Abstract: The present invention provides a human CD16+ natural killer cell line. This human CD16+ natural killer cell line does not include synthetic, genetically modified or deliberately delivered polynucleotide encoding the CD16 receptor and is a non-tumorigenic cell line. Therefore, this human CD16+ natural killer cell line might provide considerable long-term safety for disease treatment.

Abstract: A sound quality testing device for testing a communication apparatus has a sound generating unit and a sound receiving unit. The sound quality testing device includes a carrying unit, a first testing module, and a second testing module. The carrying unit carries the communication apparatus. The first testing module generates and sends a sound signal to the sound receiving unit. The second testing module receives a sound-generating signal generated by the sound generating unit. The sound quality testing device provides a standardized simulation testing environment having low or no noise signals, such that the communication apparatus can be tested precisely and steadily in terms of sound quality, such as volume, frequency responses, and harmonic wave distortion.