But despite extensive research no portrait of him can be found.

The mechanism of the direct process is still not well understood, despite much research.

However, despite such research, the postulate is still subject to considerable debate.

Despite recent research this is still a popular theory today.

Despite significant research, prognosis of this disease has changed little over time.

Despite intensive research, she has found little of his biography, save that he died in 1913.

Despite much research we cannot even today offer a convincing explanation.

However it has not been determined where this settlement existed, despite research.

Despite intensive research, however, no scientific proof of this has yet been produced.

However, despite extensive research, no firm record of him has been produced.