Photomicrographs without a Microscope

A Field-Portable Cell Analyzer without a Microscope and Reagents

This paper demonstrates a commercial-level field-portable lens-free cell analyzer called the NaviCell (No-stain and Automated Versatile Innovative cell analyzer) capable of automatically analyzing cell count and viability without employing an optical microscope and reagents. Based on the lens-free shadow imaging technique, the NaviCell (162 × 135 × 138 mm³ and 1.02 kg) has the advantage of prov...

Some Ultraviolet Photomicrographs of B. Subtilis

1. Type-specific antipneumococcus immunity has been induced in rabbits by immunization with antigen prepared by combining a specific derivative of the capsular polysaccharide of Type III Pneumococcus with globulin from horse serum. 2. Rabbits immunized with this antigen acquire active immunity against infection with virulent Type III pneumococci. 3. The sera of the immune rabbits contain type-s...

Comparative embryology without a microscope: using genomic approaches to understand the evolution of development

Until recently, understanding developmental conservation and change has relied on embryological comparisons and analyses of single genes. Several studies, including one recently published in BMC Biology, have now taken a genomic approach to this classical problem, providing insights into how selection operates differentially across the life cycle.

A technique for making high-resolution megapixel mosaic photomicrographs of nematodes.

Multiple images of a whole nematode specimen were taken with a high power oil-immersion objective lens and joined together to form one high-resolution megapixel, mosaic photomicrograph of the entire specimen, with the use of a relatively new mounting technique made with a 4% water agar pad. The agar pad kept the specimen nearly level and lateral, and when amended with 10 mM sodium azide, this m...

Blank-field correction for achieving a uniform white background in brightfield digital photomicrographs.