Agar Block Preparations
These preparations can be more correctly described as agar sandwiched cultures. They are successfully used to see the effect of antibiotics on various bacteria under the phase contrast microscope by Pulvertaft (16) and to study the spore germination by Pulvertaft and Haynes (17). The most useful application of this technique is the microscopic observation of fungi (18). This is because it allows observation of fungal culture in various developing stages without disturbing the growth conditions.
