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Chagas' Disease Life Cycle

From the Wellcome Trust, these animations illustrate the life cycle of the protozoan parasite that causes Chagas' Disease.

The parasites use a blood-sucking insect called a triatomine as an incubator and vector. The protozoan parasite mautures and reproduces in the insect before being deposited on humans in...

Dengue Virus Replication and Transmission

Produced by the Wellcome Trust, these animations take a detailed look at the molecular mechanisms that allow the dengue virus to subvert the cells of its mammalian host, allowing it to replicate and spread. Dengue is an example of an RNA virus.

Being bitten by a mosquito carrying the dengue virus can lead to...

DNA Sequencing

From the Wellcome Trust, these animations show three different methods for the sequencing of DNA.

The Sanger method, developed in 1975, illustrates an early way of determining a DNA sequence. Fluorescent bases are incorporated into fragments of DNA that are made from the sample being sequenced. Analysis of...

DNA to Protein - Transcription and Translation

This animation, from the Wellcome Trust, illustrates how the DNA code is used to build protein molecules inside our cells.

It shows how, during the process of transcription, polymerase unzips the DNA and uses it as a template to produce a strand of messenger RNA (mRNA) . The animation then goes on to show...

HIV Life Cycle

This animation, from the Wellcome Trust, shows how the human immunodeficiency virus (HIV) infects white blood cells and uses its RNA to produce a strand of DNA which becomes integrated in the host cell's genome.

HIV replicates inside white blood cells called CD4+ T cells. Here, viral DNA integrates with...

Lymphatic Filariasis

Produced by the Wellcome Trust, this animation shows the complete life cycle of tiny parasitic worms as they move between human and mosquito hosts.

Lymphatic filariasis is a disabling disease found in low-income areas of many tropical and subtropical countries. Parasitic worms multiply in the lymphatic...

Malaria Life Cycle

From the Wellcome Trust, these animations show the life cycle of the malaria parasite. They illustrate how the parasite develops in the mosquito before being transmitted to a human host following a blood meal.

The protozoan then develops inside the host's liver and red blood cells, causing the symptoms of...

Schistosomiasis Life Cycle

This animation, from the Wellcome Trust, illustrates how several species of the Schistosoma parasitic worms exploit humans and fresh water snails. The parasites use rivers and streams to transfer between the two animals, using each for a specific phase of its life cycle.

The parasitic worms are able to...

Trypanosomiasis Life Cycle

Two animations, from the Wellcome Trust, illustrate the life cycle of the trypanosomiasis protozoan parasite. They illustrate the journey of these single celled parasites, which cause human African trypanosomiasis or sleeping sickness, from the gut of the tsetse fly into the human bloodstream. If left untreated,...

Tuberculosis - Infection and Transmission

From the Wellcome Trust, this animation shows how the human immune system attempts to contain a tuberculosis infection and how the bacteria are transmitted to new people.

Tuberculosis usually affects the respiratory system but it can develop in any part of the body. The human immune system commonly contains...

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