<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It is interesting to note that with modern forensic medicine we have found that once the slightest amount of blood is left on any object, there is no way of removing every trace of it. There is a substance called lu<font class="Apple-style-span" color="#181123">minol. </font><span class="Apple-style-span" style="line-height: 21px; "><b><font class="Apple-style-span" color="#181123">Luminol</font></b><font class="Apple-style-span" color="#181123"> is a versatile </font><a href="http://en.wikipedia.org/wiki/Chemical" title="Chemical" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">chemical</font></a><font class="Apple-style-span" color="#181123"> that exhibits </font><a href="http://en.wikipedia.org/wiki/Chemiluminescence" title="Chemiluminescence" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">chemiluminescence</font></a><font class="Apple-style-span" color="#181123">, with a striking blue glow, when mixed with an appropriate </font><a href="http://en.wikipedia.org/wiki/Oxidizing_agent" title="Oxidizing agent" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">oxidizing agent</font></a><font class="Apple-style-span" color="#181123">. It is a white to slightly yellow crystalline solid that is soluble in water and most polar organic solvents.</font><div style="margin-top: 0.4em; margin-right: 0px; margin-bottom: 0.5em; margin-left: 0px; line-height: 1.5em; "><font class="Apple-style-span" color="#181123">Luminol is used by </font><a href="http://en.wikipedia.org/wiki/Forensic" title="Forensic" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">forensic</font></a><font class="Apple-style-span" color="#181123"> investigators to detect trace amounts of </font><a href="http://en.wikipedia.org/wiki/Blood" title="Blood" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">blood</font></a><font class="Apple-style-span" color="#181123"> left at </font><a href="http://en.wikipedia.org/wiki/Crime_scene" title="Crime scene" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">crime scenes</font></a><font class="Apple-style-span" color="#181123">. It is also used by biologists in cellular assays (tests) for the detection of </font><a href="http://en.wikipedia.org/wiki/Copper" title="Copper" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">copper</font></a><font class="Apple-style-span" color="#181123">, </font><a href="http://en.wikipedia.org/wiki/Iron" title="Iron" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">iron</font></a><font class="Apple-style-span" color="#181123">, and </font><a href="http://en.wikipedia.org/wiki/Cyanide" title="Cyanide" style="text-decoration: none; background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; "><font class="Apple-style-span" color="#181123">cyanides</font></a><font class="Apple-style-span" color="#181123">. There is no way in eliminating every trace of blood once it has appeared. </font></div><div style="margin-top: 0.4em; margin-right: 0px; margin-bottom: 0.5em; margin-left: 0px; line-height: 1.5em; "><font class="Apple-style-span" color="#181123">It would seem to me that perhaps the prohibition of blood centers around the fact that the tamei it conveys can never be fully eliminated.</font></div><div style="margin-top: 0.4em; margin-right: 0px; margin-bottom: 0.5em; margin-left: 0px; line-height: 1.5em; "><font class="Apple-style-span" color="#181123">I see a parallel between the paradox of the ashes of the para aduma and blood. As the ashes can render someone tahor who is tamei, and someone tamei who is tahor, likewise, without blood already inside of you, you would die. And conversely taking blood from the outside in, will cause a spiritual death.</font></div><div style="margin-top: 0.4em; margin-right: 0px; margin-bottom: 0.5em; margin-left: 0px; line-height: 1.5em; "><font class="Apple-style-span" color="#181123">ri</font></div></span></body></html>