1.0Josh Mitteldorfhttps://scienceblog.com/joshmitteldorfJosh Mitteldorfhttps://scienceblog.com/joshmitteldorf/author/joshmitteldorf/rich600338<blockquote class="wp-embedded-content" data-secret="EA9f5NKJ3U"><a href="https://scienceblog.com/joshmitteldorf/2013/03/25/young-blood/">Young Blood</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://scienceblog.com/joshmitteldorf/2013/03/25/young-blood/embed/#?secret=EA9f5NKJ3U" width="600" height="338" title="“Young Blood” — Josh Mitteldorf" data-secret="EA9f5NKJ3U" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://scienceblog.com/joshmitteldorf/wp-includes/js/wp-embed.min.js </script> Dr.  Harold Katcher of the University of Maryland believes that signals in our blood tell our stem cells how old to act, and that some key disabilities of old age might be reversed by serial transfusions of blood plasma from a young donor.  Plasma transfusion is a routine medical procedure, established to be safe for ... Read morehttp://4.bp.blogspot.com/-M3D3LKqL1Bg/ULQk5RpHEpI/AAAAAAAACG8/C9FfTQsam0w/s1600/Parabiosis.jpg