Erpobdella obscura

This is the most widely studied Turbellarian, a free-living flatworm commonly used in science fair projects.

This spore-forming, thermophilic organism is commonly used for germicidal and sporicidal testing due to its ability to withstand higher-than-normal temperatures.

Mixed genera. Also known as scuds, amphipods are freshwater crustaceans.

A collection of some of the more popular forms of coliphage. The successful culture of coliphage requires growing in the appropriate host bacterium (available separately)

Poecilia reticulata.

Create a balanced ecosystem in your aquarium with the addition of these small, freshwater algae eaters. They reproduce rapidly, laying their eggs on the glass sides of the aquarium.

Teach your students about the complete metamorphosis of an insect with these mealworms.

Found in seawater and marine animals. Young cultures luminescent.

Black Planaria are a flatworm commonly used in science fair projects. They do not bite and move very slowly, making them easy for young students to observe.

Daphnia are a widely studied small crustacean used for a number of physiology studies including the effects of drugs on heartbeat and temperature on metabolism.

A collection of some of the strains of Escherichia coli needed to grow various coliphages (available separately).

Isolated from straw, can also be found in the soil, and acts as a decomposer. Slight anti-bacterial activity. With coenocytic hyphae

Hydra are tiny animals closely related to jellyfish. They are a carnivorous species that can be found in healthy freshwater rivers and streams where they attach themselves to plants and rocks.

Hydra are tiny animals closely related to jellyfish. They can be carnivorous as well as photosyntheic due to their symbiotic relationship with green algae Zoochlorellae.

This large predatory frog will eat any other organism smaller than itself, including smaller bullfrogs; keep similar-sized frogs together to avoid cannibalism.

These fascinating frogs are uniquely adapted for climbing, with prominent adhesive pads on the ends of their digits.

Paramecium bursaria is a ciliate that contains mutualistic algae called Zoochlorella. The algae lives in the cytoplasma of the Paramecium and provides it with food. Paramecium bursaria grows in Dilute Alfalfa Medium (Hay Medium) or Soil Water Medium. Requires light for growth.

Ward's® Live Escherichia coli, Lactose Negative Culture

Four to six adults of each sex (including virgin females) have been carefully selected for the parent generation. Larvae will be visible within a week of receipt. Please order 7-10 days in advance.

We fully guarantee the purity and viability of our Drosophila melanogaster cultures. A large, vigorous culture is shipped in a shatterproof plastic vial. To ship Drosophila cultures with living larvae we require 10 days' notice prior to use date. During very cold weather, adult flies may die but eggs and larvae usually survive. Allow cultures to come to room temperature before checking under low magnification for eggs and live larvae. Complete instructions are always included.

Paramecium aurelia is the smallest species of Paramecium we offer. Paramecium aurelia is characterized by cilia, which it uses for locomotion and feeing. Contains a macronucleus and two micronuclei. Grows in Dilute Alfalfa Medium (Hay Medium).

Commonly known as the Vinegar Eel, these free-living nematodes require very little care, feeding in vinegar and feeding on fungi contained in it.

Marine; Small Motile Cells with the Transverse Furrow Located Near the Apex.

Pink to bright rose color.
Characterized by cilia; nearly all possess two types of nuclei.

This "many-headed" organism is a plasmodial slime mold commonly found in forests on decaying deciduous trees. Available in both plasmodial and sclerotial stages.

Deuteromycete. Produces penicillin. Incubation temperature 25°C. Malt extract agar growth medium.

Deuteromycete. Biological control organism. Traps nematodes. Incubation temperature 25°C. Cornmeal agar growth medium.

Drosophila melanogaster, the common fruit fly, is widely used in genetic studies. They express a number of mutations such as eye, wing, and body mutations. Students can study sex-linked, recessive, and dominant mutations. Drosophila also makes an excellent live food for mantises, small reptiles, and amphibians. Drosophila demonstrates complete metamorphosis with egg, larva, pupa, and adult stages in its life cycle.

Usually found in freshwater and mosses, this organism has a hard umbrella shaped shell or "test", out of which finger-like pseudopodia project.

Ideal for use as a model system, this free-living nematode has biological processes similar to those of other animals. The transparent animal normally inhabits soil.