diff --git a/13-intro_Seurat.Rmd b/13-intro_Seurat.Rmd
index ff630a2..ce83521 100644
--- a/13-intro_Seurat.Rmd
+++ b/13-intro_Seurat.Rmd
@@ -387,3 +387,9 @@ Agradecemos a nuestros patrocinadores:
 <a href="https://comunidadbioinfo.github.io/es/post/cs_and_s_event_fund_award/#.YJH-wbVKj8A"><img src="https://comunidadbioinfo.github.io/post/2021-01-27-cs_and_s_event_fund_award/spanish_cs_and_s_award.jpeg" width="400px" align="center"/></a>
 
 <a href="https://www.r-consortium.org/"><img src="https://www.r-consortium.org/wp-content/uploads/sites/13/2016/09/RConsortium_Horizontal_Pantone.png" width="400px" align="center"/></a>
+
+
+# Plática de Ricardo Ramirez {-}
+
+<blockquote class="twitter-tweet"><p lang="es" dir="ltr">Empieza la plática científica de Ricardo O. Ramirez Flores <a href="https://twitter.com/roramirezf94?ref_src=twsrc%5Etfw">@roramirezf94</a> 🇲🇽 🙌🏽<a href="https://t.co/iXo6Pnl4tl">https://t.co/iXo6Pnl4tl</a><br><br>👀 <a href="https://t.co/1J4h0H2QKL">https://t.co/1J4h0H2QKL</a><a href="https://twitter.com/hashtag/scRNAseq?src=hash&amp;ref_src=twsrc%5Etfw">#scRNAseq</a> #rstats#rstatsES <a href="https://twitter.com/Bioconductor?ref_src=twsrc%5Etfw">@Bioconductor</a> <a href="https://twitter.com/hashtag/EBM2021?src=hash&amp;ref_src=twsrc%5Etfw">#EBM2021</a> <a href="https://twitter.com/hashtag/CDSB2021?src=hash&amp;ref_src=twsrc%5Etfw">#CDSB2021</a> <a href="https://twitter.com/saezlab?ref_src=twsrc%5Etfw">@saezlab</a> <a href="https://t.co/EBPKwtyhO4">pic.twitter.com/EBPKwtyhO4</a></p>&mdash; ComunidadBioInfo (@CDSBMexico) <a href="https://twitter.com/CDSBMexico/status/1426282446094540807?ref_src=twsrc%5Etfw">August 13, 2021</a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+