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Hannah Peckham (she/her) @hlpeks.bsky.social · Apr 2

Thanks for the highlight @arrdept-ucldom.bsky.social ! Bernard very happy you captured his good side 😺

UCL Dept of Aging, Rheumatology & Regenerative Medicine @arrdept-ucldom.bsky.social · Apr 2

When @hlpeks.bsky.social isn’t working in clinics with patients contributing to many studies in our department, you can find her behind a trolley of insects, fossils or gemstones 🐞🦖💎 at the natural history museum where she volunteers as a learning educator volunteer or hanging out with Bernard 🐈‍⬛

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Reposted by Hannah Peckham (she/her)

Journal of Experimental Medicine @jem.org · Mar 28

Sex hormones and chromosomes work in tandem to impact immune responses, with estrogen influencing class-switched memory B cell frequency exclusively in humans with an XX chromosomal background. From @hlpeks.bsky.social, @bcellsrosser.bsky.social, Coziana Ciurtin et al. rupress.org/jem/article/...

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Reposted by Hannah Peckham (she/her)

Medical Research Foundation @medresfdn.bsky.social · Mar 27

Did you know women may be naturally better at fighting certain infections than men?

A UCL study funded by the Foundation finds women have a higher proportion of key immune cells between puberty & menopause. 💪🦠

Tune in to @bcellsrosser.bsky.social on BBC R4’s Inside Health to learn more!

Hannah Peckham (she/her) @hlpeks.bsky.social · Mar 25

And please give a listen to our research featured on BBC Radio 4's Inside Health show! Lucy and Lizzy did a wonderful job talking about our findings! (We're in the second half) @bcellsrosser.bsky.social www.bbc.co.uk/sounds/play/...

Inside Health - Assisted dying: Who’s eligible under the proposed bill? - BBC Sounds

In the first of our mini-series we discuss who could get an assisted death under the rules

www.bbc.co.uk

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Reposted by Hannah Peckham (she/her)

Journal of Experimental Medicine @jem.org · Mar 26

Great coverage of the recent JEM paper by @hlpeks.bsky.social, @emmaschambers.bsky.social, @bcellsrosser.bsky.social, Coziana Ciurtin, and colleagues. See the original paper here: rupress.org/jem/article/...

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Reposted by Hannah Peckham (she/her)

jury-lab.bsky.social @jury-lab.bsky.social · Mar 25

Congratulations @hlpeks.bsky.social great work. So important to understand sex differences in immunity

Hannah Peckham (she/her) @hlpeks.bsky.social · Mar 25

Thrilled to finally share our paper on how sex hormones and sex chromosomes interact to affect B cell class-switching!🥳 Diversity & inclusion in research recruitment = better science for all!😎 Thanks to @bcellsrosser.bsky.social@[email protected] for ++ hard work!🌟

Estrogen influences class-switched memory B cell frequency only in humans with two X chromosomes | Journal of Experimental Medicine | Rockefeller University Press

Sex hormones and chromosomes work in tandem to impact immune responses, with estrogen influencing class-switched memory B cell frequency exclusively in ind

rupress.org

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Hannah Peckham (she/her) @hlpeks.bsky.social · Mar 25

And please give a listen to our research featured on BBC Radio 4's Inside Health show! Lucy and Lizzy did a wonderful job talking about our findings! (We're in the second half) @bcellsrosser.bsky.social www.bbc.co.uk/sounds/play/...

Inside Health - Assisted dying: Who’s eligible under the proposed bill? - BBC Sounds

In the first of our mini-series we discuss who could get an assisted death under the rules

www.bbc.co.uk

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Reposted by Hannah Peckham (she/her)

Lizzy Rosser @bcellsrosser.bsky.social · Mar 25

So excited to see this out please read the paper, article and listen to us on the radio! Big thanks to @uclnews.bsky.social, our superstar postdoc @hlpeks.bsky.social, co-senior author Prof Coziana Ciurtin and collaborators @emmaschambers.bsky.social

UCL News @uclnews.bsky.social · Mar 25

Until menopause women have more key immune cells, which may explain why they're less prone to some infections than men, finds a @jem.org study from @arrdept-ucldom.bsky.social including Dr Hannah Peckham @hlpeks.bsky.social & Dr Lizzy Rosser @bcellsrosser.bsky.social
www.ucl.ac.uk/news/2025/ma...

Abundance of key immune cells may be influenced by oestrogen and XX chromosomes

Women have a higher proportion of key immune cells between puberty and menopause, which may be linked to the sex hormone oestrogen and explain why they are less susceptible to certain infectious disea...

www.ucl.ac.uk

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Hannah Peckham (she/her) @hlpeks.bsky.social · Mar 25

And thank you to UCL news for highlighting our work in this article! 😀😀😀

UCL News @uclnews.bsky.social · Mar 25

Until menopause women have more key immune cells, which may explain why they're less prone to some infections than men, finds a @jem.org study from @arrdept-ucldom.bsky.social including Dr Hannah Peckham @hlpeks.bsky.social & Dr Lizzy Rosser @bcellsrosser.bsky.social
www.ucl.ac.uk/news/2025/ma...

Abundance of key immune cells may be influenced by oestrogen and XX chromosomes

Women have a higher proportion of key immune cells between puberty and menopause, which may be linked to the sex hormone oestrogen and explain why they are less susceptible to certain infectious disea...

www.ucl.ac.uk

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Hannah Peckham (she/her) @hlpeks.bsky.social · Mar 25

Thrilled to finally share our paper on how sex hormones and sex chromosomes interact to affect B cell class-switching!🥳 Diversity & inclusion in research recruitment = better science for all!😎 Thanks to @bcellsrosser.bsky.social@[email protected] for ++ hard work!🌟

Estrogen influences class-switched memory B cell frequency only in humans with two X chromosomes | Journal of Experimental Medicine | Rockefeller University Press

Sex hormones and chromosomes work in tandem to impact immune responses, with estrogen influencing class-switched memory B cell frequency exclusively in ind

rupress.org

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