TWiM 224: One hundred million year old bacteria

The TWiM team reveals the genetic mysteries of the Dead Sea Scrolls from sequencing of DNA, and 100 million year old living bacteria recovered from marine sediments.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#224 (55 MB .mp3, 75 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 223: The smell of soil

The TWiMmers explore detection of SARS-CoV-2 on surfaces in an ophthalmology examination room, the ability of stressed populations of Yersinia bacteria to survive antimicrobial treatment within host tissues, and how volatile organic chemicals produced by soil microbes attract arthropods which in turn disperse bacterial spores.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#223 (58 MB .mp3, 79 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 222: Biosensors in bacteria

Mark Martin joins TWiM to describe nano-sized parasitic bacteria that inhabit humans, and the construction of whole-cell biosensors for detecting arsenic in drinking water.

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Guest: Mark O. Martin

Right click to download TWiM#222 (58 MB .mp3, 79 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 221: Weapon of mucus destruction, WMD

Colonies of P. aeuginosa (right) and S. aureus (left). Image credit.

TWiM reveals a potential mucus-busting weapon for patients with cystic fibrosis, and bacteria in the intestinal tract that can oxidize cholesterol, leading to lower levels of the lipid in blood.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#221 (50 MB .mp3, 69 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 220: From Mars to the vagina

TWiM reveals that methane-producing bacteria might survive beneath the surface of Mars, and identification of a cytopathogenic toxin in a bacterium associated with preterm birth.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#220 (32 MB .mp3, 43 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 219: Commensal for a healthy skin

The TWiM team discusses eradicating racism in academia and STEM, and a peptide from commensal bacteria that protects skin from damage caused by MRSA.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#219 (45 MB .mp3, 62 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM 218: The lengths SARS-CoV-2 will go

The TWiM team explains how breathing can transmit SARS-CoV-2, and how lack of breathing leads to loss of mitochondria in a multicellular parasitic animal.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#218 (45 MB .mp3, 62 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to [email protected]

TWiM 217: The chronicles of narnaviruses

The TWiM team explains an experimental vaccine to prevent E. coli urinary tract infections, and the remarkable three-way symbiosis of narnaviruses, bacteria, and fungi.

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Right click to download TWiM#217 (38 MB .mp3, 52 minutes)

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Links for this episode

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to [email protected]

TWiM 216: It starts with a cough

The TWiM team discuses saliva as more sensitive for SARS-CoV-2 detection in COVID-19 patients than nasopharyngeal swab and how Mycobacterium tuberculosis sulfolipid-1 activates nociceptive neurons and induces cough.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#216 (47 MB .mp3, 64 minutes)

Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email. You can also listen on your mobile device with the Microbeworld app.

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Links for this episode

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to [email protected]

TWiM 215: Cultural transformation and pathogen emergence

A ferret model for infection by SARS-CoV-2, and how Neolithization lead to emergence of a human bacterial pathogen.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt

Right click to download TWiM#215 (41 MB .mp3, 57 minutes)

Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email. You can also listen on your mobile device with the Microbeworld app.

Become a Patron of TWiM!

Links for this episode

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to [email protected]

The Hosts of TWiM

Petra Levin, Ph.D.


Michele Swanson, Ph.D.


Michael G. Schmidt, Ph.D.


Vincent Racaniello, Ph.D.


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Please note that content in MicrobeTV podcasts should not be construed as medical advice.