Spermatozoa Collection (#2)

Fertilisation, artwork C018 / 7001
Fertilisation. Computer artwork of numerous sperm cells (spermatozoa, blue) swimming towards an egg (round) in the distance

Sperm cells, artwork C018 / 7002
Sperm cells. Computer artwork of numerous sperm cells (spermatozoa), showing their torpedo-shaped heads, and long tails that they use for propulsion

Fertilisation, artwork C018 / 6994
Fertilisation. Computer artwork of a sperm cell (spermatozoon, purple) penetrating an egg (red, right)

Fertilisation, artwork C018 / 6997
Fertilisation. Computer artwork of numerous sperm cells (spermatozoa, white) surrounding an egg (round, centre). Only a single sperm cell can penetrate and fertilise the egg

Sperm cells, artwork C018 / 7000
Sperm cells. Computer artwork of numerous sperm cells (spermatozoa), showing their torpedo-shaped heads, and long tails that they use for propulsion

Sperm cells, artwork C018 / 6999
Sperm cells. Computer artwork of numerous sperm cells (spermatozoa), showing their torpedo-shaped heads, and long tails that they use for propulsion

Sperm tails, TEM C014 / 1463
Sperm tails. Transmission electron micrograph (TEM) of sections through the tails of sperm (spermatozoa) cells at various levels

Sperm tails, TEM C014 / 1465
Sperm tails. Transmission electron micrograph (TEM) of sections through the tails of sperm (spermatozoa) cells at various levels

Sperm tails, TEM C014 / 1464
Sperm tails. Transmission electron micrograph (TEM) of sections through the tails of sperm (spermatozoa) cells at various levels

Fertilisation, artwork C013 / 4647
Fertilisation. Computer artwork of a sperm cell (spermatozoa) penetrating an egg (large)

Sperm cells, artwork C013 / 4645
Sperm cells. Computer artwork of numerous sperm cells (spermatozoa), showing their torpedo-shaped heads, and long tails that they use for propulsion

Fertilisation, artwork C013 / 4646
Fertilisation. Computer artwork of numerous sperm cells (spermatozoa) swimming towards an egg (left)

Fertilisation, artwork C013 / 4643
Fertilisation. Computer artwork of numerous sperm cells (spermatozoa) swimming towards an egg (bright) in the distance

Fertilisation, artwork C013 / 4644
Fertilisation. Computer artwork of numerous sperm cells (spermatozoa) swimming towards an egg (bright) in the distance

Sponge releasing sperm. Unidentified sponge (phylum Porifera) releasing sperm (white) into the water. These male sex cells (spermatozoa) will be taken into the tissues of nearby sponges

LM of human sperm fertilising an egg
Sperm fertilising egg. Light micrograph of a human egg with sperm at its surface attempting to penetrate and fertilise it

False-colour SEM of sperm in the uterine cavity

Computer artwork of human sperm fertilising an egg
Sperm fertilising egg. Computer illustration of sperm cells (white) approaching a human egg (pink), before one of the sperm fertilises it

False-colour SEM of a spermatozoon on uterus wall
A spermatozoon on the uterine mucosa. False-colour scanning electron micrograph of a spermatozoon floating over the endometrium, the internal wall of the uterus

Egg fertilisation
False-colour transmission electron micrograph (TEM) of a single human ovum (egg) surrounded by sperm. The egg has been coloured orange, and the numerous sperm appear rougly spherical in this section

False-colour SEM of sperm on uterine surface
Capacitation of spermatozoa. False-colour scanning electron micrograph of a group of spermatozoa (turquoise) floating over the endometrium, the internal wall of the uterus

False-colour SEM of sperm on a human egg
Fertilisation. False-colour scanning electron micrograph of sperm (blue) on a human egg. In order to fertilise the egg a spermatozoon must penetrate the thick layer of follicular cells (pink)

Human fertilisation
Sperm fertilising egg. Computer illustration of sperm cells (at right) approaching a human egg (at left). One of the sperm is fertilising it

Light micrograph of human sperm cells

Sperm tails, TEM
Sperm tails. Coloured transmission electron micrograph (TEM) of cross sections through sperm tails. A sperms tails ability to move is partly due to the arrangement of microtubules

Human sperm

Gender determination, computer artwork. Gender is determined by the sex chromosomes, X and Y. Females have 2 X chromosomes and men an X and a Y chromosome

False-colour SEM of human egg surrounded by sperm

Medical nanorobot on sperm cell
Medical nanorobot. Computer artwork of a medical nanorobot holding a sperm cell. Microscopic robot technology could be developed in the future to treat disorders, such as infertility, in new ways

Fertilisation, computer artwork. Sperm fertilising an egg

Fertilization. Artwork of sperm cells (white and black) surrounding a human egg cell (round). The egg cell is protected by an outer layer, the zona pellucida (black)

Sperm cells. Computer artwork of sperm cells, or spermatozoa. These tiny male sex cells are produced in the testes, and are responsible for the fertilization of the female egg (ovum)

Human sperm cells, SEM
Sperm cells. Coloured scanning electron micrograph (SEM) of human sperm cells or spermatozoa. These tiny male sex cells are produced in the testes

Human sperm cell, SEM
Sperm cell. Coloured scanning electron micrograph (SEM) of the head of a human sperm cell or spermatozoon. This tiny male sex cell is produced in the testes

Epididymis, SEM
Epididymis. Coloured scanning electron micrograph (SEM) of a freeze fracture through the epididymis. Immature sperm (bright pink at top) are seen in the tubule lumen

Immature dog sperm, SEM
Dog sperm. Coloured scanning electron micrograph (SEM) of immature dog sperm. These immature sperm are characterised by a small amount of unshed residual cytoplasm about a third of the way down

Acrosome reaction, artwork
Acrosome reaction. Computer artwork showing the process by which an acrosome from a spermatozoon (sperm cell) binds to an ovum (egg cell, bottom). Each spermatozoon has an acrosome in its tip

Human fertilisation, artwork
Human fertilization. Artwork of a single sperm cell (spermatozoon) attempting to fertilise a human egg cell (ovum, round, lower right). The sperm cell consists of a head section and a tail section

Fertilisation, conceptual image

ZP3 glycoprotein molecule
ZP3 glycoprotein. Computer artwork of a molecule of ZP3 (zona pellucida glycoprotein 3), a sperm receptor in the external membrane (zona pellucida) of a female germ cell (egg)

Male Spermatozoa
Male spermatozoa according to Hartsoeker (main figure) and Dalepadius (smaller) : both perceive the sperm as humanoid in form !

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"Spermatozoa: The Tiny Warriors of Life" In the vast world of reproductive biology, spermatozoa play a pivotal role in the creation of life. These microscopic cells hold immense power and are often depicted as warriors on a mission to fertilize an egg. Picture No. 11675522 showcases the intricate dance between an IUD contraceptive and sperm cells, representing the constant battle for conception that occurs within our bodies. This image serves as a reminder of how these resilient little beings persistently strive towards their ultimate goal. Frozen sperm, conceptual image (Picture No. 11675577) highlights the advancements in modern science that allow us to preserve these vital cells for future use. It symbolizes hope for couples struggling with infertility or those who wish to plan their families at a later stage. Microscopic views of human spermatozoa in semen (Picture No. 11675576) provide us with an up-close look at these remarkable creatures swimming through their natural habitat – semen. Their unique shape and tail propulsion system enable them to navigate this complex environment with precision and determination. Human sperm cells (Picture No. 11675524) capture the essence of life's beginnings - each cell carrying half of our genetic material, ready to unite with an egg and create new life. Illustration showing the life cycle of a fern, inset displaying spermatozoa entering female organ (archegonia), emphasizes that even beyond humans, these tiny warriors exist across various species, playing crucial roles in reproduction (Picture No. 11675523). The remaining pictures - Picture Nos. 11675521-20 - further emphasize different aspects related to spermatozoa; they represent diverse perspectives on this fascinating subject matter.