Medical research is currently progressing on a non-vegan path. Although it's a widespread opinion that objectives are attained and benefits are eventually gained by humanity, this is surely done at the expense of animal life. Statistical evidence strongly suggests, moreover, that the research method is extremely inefficient (quoting an extract from the source):
In 2004, the FDA estimated that 92 percent of drugs that pass preclinical tests, including “pivotal” animal tests, fail to proceed to the market. More recent analysis suggests that, despite efforts to improve the predictability of animal testing, the failure rate has actually increased and is now closer to 96 percent.
Reading above gives only half of the insight. What is not possible to tell is how many drugs would have been effective on humans but were stopped by the currently adopted metric of "not tested successfully on animal subjects"
It is clear that there is a need to find better techniques to progress in the field. By better I mean more targeted to humans, more efficient and less expensive. And of course I would like to restrain the field to techniques which are ethically acceptable from a vegan point of view.
Are there any promising techniques that could someday be used for research in place of animal experimentation?