Objective: To evaluate twenty Traditional Chinese Medicines (TCM) against four oral bacteria. Methods: Twenty TCM were tested for sensitivity against Streptococcus mitis, Streptococcus sanguis, Streptococcus mutans and Porphyromonas gingivalis. Aliquots of suspension of each bacterial species were inoculated on a horse blood agar (HBA) plate, 6 mm diameter paper disks was soaked in different dr...

It has been noted that spore characters are diagnostic for separating various North American taxa of Dryopteris (Crane, 1953) .. Professor Irene Manton (see Manton, 1950), University of Leeds, and Dr. Stanley Walker, University of Liverpool, who have worked on the cytology of diploid and tetraploid specimens of British and European D. dilatata (Hoffm.) A. Gray, report it difficult to distinguis...