Page 138 - Demo

Apparatus and Supplies
Microscopes and Slides—Prepared Slides, continued
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BACTERIA, continued
Catalog No.
Description
Price/Each
CYANOBACTERIA, continued
Protists— ComparisetTM
Examine the similarities and differences among the major groups of protists. The five slides selected include Euglena, a masti­ gophoran (flagellate); Amoeba proteus, a sarco­ dine; Stentor, a ciliate; Plasmodium, a parasitic sporozoan; and mixed freshwater diatoms, photo­ synthetic chrysophytes. Relevant comparisons can be made with respect to motility, photosynthetic capability, life history, and subcellular structures. The diatoms are included as an intermediate form between protists and higher algae.
Catalog No.
ML1420
Description
Protists— ComparisetTM
Price/Each
$30.30
ML1022 Nostoc, sec. $4.85 Section through gelatinous matrix showing colonial filaments with heterocysts.
Mostly single­celled autotrophic and heterotrophic organisms that, as a group, exhibit remarkable variety in motility, life history and organization. For the sake of simplicity, the multi­cellular algae have been listed under this heading with the understanding that they are often grouped with the higher plants.
ML1024
Oscillatoria, w.m.
Unbranched cylindrical filaments.
5.00
PROTISTS
Catalog No.
Description
Price/Each
ML1026
Mixed protozoa, w.m.
Includes Amoeba, Paramecium, Euglena, and others.
$9.80
PSEUDOPODS
ML1027 Amoeba proteus, w.m.
Included are both floating and crawling forms with readily visible pseudopods and intracellular structures.
ML1029 Entamoeba histolytica, smear.
Trophozoites of this intestinal parasite, a causative agent of amoebic dysentery.
ML1032 Radiolaria, w.m.
The ornate skeletons of these protists are a primary constituent of oceanic sediments.
$ 6.50
14.90
5.55
ML1028
Chaos carolinensis, w.m.
The giant amoeba, with multiple nuclei.
6.10
ML1031
Foraminifera.
The cleaned shells of several species from oceanic sediments.
5.60
CILIATES
ML1034
Paramecium caudatum, w.m.
A number of individuals stained to show large macronucleus and single, small micronucleus.
$ 4.10
ML1035
Paramecium caudatum, w.m. Conjugating pairs.
10.45
ML1036
Paramecium multimicronucleatum, w.m.
This large species has a single macronucleus and several micronuclei.
5.10
ML1037
Paramecium, fission, w.m.
A large number of individuals with several specimens undergoing fission. Nuclei stained.
13.35
ML1039
Stentor, w.m.
Trumpet­shaped organism with a distinctive beaded nucleus.
7.70
ML1040
Vorticella, w.m.
Bell­shaped ciliate with a contractile stalk which coils and extends like a spring.
9.60
APICOMPLEXA (SPOROZOANS)
Prokaryotes vs. Eukaryotes— ComparisetTM
At the cellular level, living things can be divided into two basic groups: the prokary­ otes—without a distinct nucleus and membrane­ bound organelles, and the eukaryotes—cells which do possess a distinct nucleus and membrane bound organelles. In this set the prokaryotes are represented by the cyano­ bacterium Gloeocapsa and by bacteria—three forms mixed. The eukaryotes are represented by the evolu­ tionarily intermediate Euglena and by the large and easily studied liver cells of the Congo eel Amphiuma; four slides total.
Catalog No.
ML1393
Description
Prokaryotes vs. Eukaryotes— ComparisetTM
Price/Each
$19.80
ML1042 Plasmodium sp., smear.
Red blood cells infected by trophozoites (including ring forms) are clearly visible in this malarial preparation.
ML1055 Mixed green algae, w.m.
Composite slide of five or more common species.
$13.00
$4.85
EUGLENOZOA
ML1044
Euglena, w.m.
Specimens of this unique and difficult­to­classify organism clearly show all major structures.
$4.60
GREEN ALGAE
ML1045
Chlamydomonas, w.m.
Single­celled, biflagellate, photosynthetic organism often grouped with the green algae.
4.60
ML1059
Oedogonium, w.m.
Common in freshwater, forms unbranched filaments with distinctive reproductive cells.
7.55
MICROSCOPES AND SLIDES—PREPARED SLIDES continued on next page.