ant
aphid
aspirin
butterfly
blood
bloodclot
brain tumor
bread mold
cockroach
dog flea
dust mite
e-coli bacteria
geranium pollen
goldfish skin
herpes virus
honeybee
house fly
jumping spider
kitchen sponge
leaf
leaf stoma
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The easiest place to find bacteria in your home. Many times when you're ill with a 'cold', you really have a low-level infection caused by bacteria spread when 'cleaning' with your dishrag or sponge.
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lightbulb filament
mold
mosquito
muscle cell
paper (coarse)
paramecium
plaque & tartar
ragweed pollen
rose petal
salt crystal
sand flea
skin (human)
skin (shark)
slime mold
soil
sperm
spider's spinnerets
staphylococcus
streptococcus
velcro
vitamin C
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