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.
E eram tecnologias muito promissoras, porém, ou eram ineficientes, ou eram tão difíceis de usar que muitos cientistas não as adotaram em seus laboratórios, e elas certamente não tiveram muitos usos clínicos.