In the course of our work on the gibberellin relationships of organs in the sunflower plant (Helianthus annuus), we have adopted a modification of the classical technique of agar-diffusion.

However, it was thought that the combination of the sensitivity of the agar-gel diffusion technique with the continuous antibody production of cells in tissue culture possessed possibilities of ...

Aseptic technique is vital when the effectiveness of antibacterial substances is being tested. Reason – this allows the bacteria to spread out and to grow in individual colonies on the agar plate.