ZoS 57 DIVISION OF THE CELL

Enlarged many times, in SOMSO-Plast. Shown by 8 models: Prophase, metaphase, anaphase and telophase. These models allow one to follow the process of indirect division (mitosis) in the living cell, seen photomicroscopically. Individually mounted on stands, with bases. Weight of the series: 2.7 kg.

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ZoS 57/1 MITOSIS

After Studiendirektor Christian Gro*. Enlarged many times, in SOMSO-Plast. On 8 separate models the following phases are represented: 1. late interphase, 2. prophase, 3. beginning metaphase, 4. metaphase - equatorial plane, 5. anaphase - migration of daughter chromosomes, 6. late anaphase, 7. telophase and 8. daughter cells in the early interphase. As shown in the models 3 - 5 the spindles and chromosomes can be revolved for demonstration purposes under a transparent cover. In one piece. The models are mounted individually on a stand with base. Weight of the series: 7.1 kg

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ZoS 57/2 MEIOSIS

As a component of cell division, shown by 8 models with 2 explanatory introductory models, enlarged many times, in SOMSO-Plast. After Studiendirektor Christian Gro*. The series shows the processes of meiosis in the division of chromosomes and the arrangement of genomum within the cell multiplication. The crossing-over processes are not shown. In one piece. Individually mounted on a stand with base. Weight of the series: 3.3 kg.

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ZoS 57/3 CHANGE OF NUCLEAR PHASES IN THE MATURATION OF SPERM AND OVUM (MEIOSIS)

Many times enlarged. After Studiendirektor Christian Gro*. In SOMSO-Plast. Chromosomes of paternal and maternal origin as well as hetero chromosomes shown in different colours. Consisting of 5 single models. Individually mounted on stand with base. Weight of the series: 2 kg.

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ZoS 58 EQUAL CELL DIVISION AND THE FORMATION OF THE NUCLEAR MEMBRANE IN THE BRANCHIOSTOMA LANCEOLATUM MEMBRANE IN THE BRANCHIOSTOMA LANCEOLATUM

Amphioxus, Lancelet, enlarged approx. 500 times, in SOMSO-Plast. Nine models (A - J) on stands with bases show the various stages in cell division, the formation of the blastula and original membrane. In one piece. Weight of the series: 1.9 kg.

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ZoS 59 LANCELET

Branchiostoma lanceolatum, enlarged approx. 150 times, in SOMSO-Plast. The 4 models (K - N) show the formation of the nuclear membrane in the larva of the lancelet and its final structure in longitudinal and cross section. Individually mounted on a stand with base. Weight of the series: 4.2 kg.

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ZoS 103 STRUCTURE OF CHICKENíS EGG

The model shows an unincubated, fertilised chicken's egg, enlarged 6.5 times linearly, in SOMSO-Plast. In one piece, on a stand and base with explanatory notes. Height: 43 cm., width: 39 cm., depth: 26 cm., weight: 3.5 kg.

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ZoS 103/1 GERMINAL DISC OF A FERTILIZED BUT UNINCUBATED EGG

The model shows the germinal disc in the stage of the formation of the yolk membrane - linearly enlarged 70 times, in SOMSO-Plast. In one piece, on a stand with base. Height: 45 cm., width: 28 cm., depth: 18 cm., weight: 1.4 kg.

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ZoS 103/2 CHICKENíS EMBRYO AFTER APPROX. 20 HOURS INCUBATION

This separable model shows a section of the membrane enlarged 56 times linearly, in SOMSO-Plast. Separates into 4 parts, on a stand with base. Height: 41 cm., width: 28 cm., depth: 18 cm., weight: 1.3 kg.

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ZoS 103/3 CHICKENíS EMBRYO AFTER APPROX. 33 HOURS INCUBATION

Enlarged 53 times linearly. In SOMSO-Plast. A concentric part of the embryo can be removed from the yolk, Somites and chorda are visible through a ventral window. Separates into 2 parts, on a stand with base. Height: 44 cm., width: 29 cm., depth: 18 cm., weight: 1.4 kg.

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