Is tissue testing more accurate than testing vaccines on non human primates?

Question

Is tissue testing more accurate than testing vaccines on non human primates?

Answer 1

Innovative Developments occured in Vaccine production.
Currently researchers are seeking to develop genetically altered plants that could provide immunity to infectious diseases. Studies have already shown that genetically engineered plants can act as a vaccine, causing an immunological response in mice that have eaten these plants. Plants acting as vaccines would offer the advantage of being inexpensive to produce, and thus they could more easily be made available to developing countries. In addition, contamination with animal viruses would be eliminated, since cultured cells would not be used in the production process. Many of the quality control tests that require animals also could be eliminated.
Animal testing is now only next best.