In order to draw out the voltage signal generated by the sound and amplify it, the output end must also use a field-effect transistor. history The history of microphones can be traced back to the end of the 19th century. Scientists such as Alexander Graham Bell worked hard to find ways ...
The major drawback of this system is the relatively low DNA loading capacity. Endogenous proteins can be also used to design NC for gene delivery. A good example is albumin which is generated largely by the liver and constitutes the most abundant serum protein [183]. Albumin has been ...