Legends
for illustrations on Food Safety lab home page:
1.
(background) Hepatitis A virus particles, transmission electron micrograph
(diameter of particle is ~28 nm)
2.
Oocysts of Cryptosporidium parvum, stained with fluorescent antibody (these
are 4-6 µ in their dimensions)
3.
Oocysts of Cryptosporidium parvum, scanning electron micrograph
4.
Colonies of Salmonella Enteritidis (blue) to which a plasmid (BFP) has been
added that codes for a protein that fluoresces blue under long wavelength
UV; the other colonies (green) are Escherichia coli O157:H7 to which a plasmid
(eGFP) has been added that codes for a protein that fluoresces green under
long wavelength UV.
5.
Cyst of Giardia lamblia, scanning electron micrograph
(size 8 × 12 µ)
6.
Gel showing "fingerprinting" of Cryptosporidium parvum by randomly amplified
polymorphic DNA ("RAPD")
7.
Virus plaques formed in the FrhK-4 cell line, stained with crystal violet
— from left: uninoculated culture, poliovirus 1 plaques after 5 days of
incubation at 37 C; hepatitis A virus plaques after 16 days of incubation
at 37 C
8.
Sporozoites of Cryptosporidium parvum, scanning electron micrograph
9.
Cells of the Madin-Darby Bovine Kidney cell line, stained with acridine
orange and excited by UV
10.
Quantitative spread plating of Salmonella enteritidis containing the BFP
plasmid (cf. 4)
