And these technologies were very promising, but the problem was that they were either inefficient, or they were difficult enough to use that most scientists had not adopted them for use in their own laboratories, or certainly for many clinical applications.
Essas tecnologias eram muito promissoras mas o problema era que ou eram ineficazes, ou eram tão difíceis de usar que muitos cientistas não as adotaram para uso nos seus laboratórios, nem certamente para muitas aplicações clínicas.