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==The Art of '''Replicae==The art ''' are artificial beings created by genetic engineering, the branch of replicae is a means of creating [[Space Marine]] warriors without using a recruit the science known to archaic humans as a base for [[Creation_of_a_Space_Marine|gene-seed]] transformation. Instead gene-seed is used to create clones of previous battle brothers which can be amalgamations or singular individuals"cloning. " The Astartes gene-seed is used to artificially produce a fully upgraded mature warrior which possess all the implants and modifications of all astartes, e.g. a secondary heart. Note that excessive use of replicae will result in gene-seed quality deterioration, an example of the results is science was widespread during the [[Raven GuardDark Age of Technology]] chapter, but barely understood in later eras.{{Fn|2}}

==Side EffectsSpace Marine Replication ==Replication has been tried at least twice in the [[Imperium]]'s history by a [[Space Marine]] unit seeking to quickly replace catastrophic losses. Instead of using [[human]] recruits, [[geneseed]] is used to "grow" clones of previous battle brothers, which can be amalgamations or singular individuals. Ideally, this process should produce a fully mature [[Astartes]], with all of his [[Creation of a Space Marine|implanted organs]] fully mature, and ready for combat in a matter of weeks or months, instead of the normal years it takes to mature and train a [[Neophyte]] into a full-fledged battle-brother.{{Fn|2}} Being one of the many technologies developed in the [[Dark Age of Technology]], a great deal of the processes and techniques to create for creating successful and functioning clones was lost. These include the purification of the blood to be used in the cloning proceedure and the elimination of gene-flaws. {{Fn|2}} Due to the loss of these techniques, [[mutations ]] and other deformities will occuroccurred in almost every later attempt to repeat the process. These might include extra limbs, e.g. tentacles, other growths such as claws and fangs and also mental and psychological changes, including fury and predatory bloodlust.  The replicae process can also magnify and accentuate already present gene-flaws. In many cases deformities present in the gene-stock can take disturbing and horrific shapes in the replicae. One example of this is the gene-flaws [[Blood Angels|black rage]] and [[Blood Angels|red thirst]] in the [[Blood Angels]] chapter, which cause replicae to mutate with the red thirst into vampire like organisms.

* In [[CoraxM31]] and , due to the heavy losses the [[Raven Guard]]: Due to the heavy losses the Raven Guard chapter [[Legion]] sustained during the [[Horus HeresyIsstvan V]]massacre, many accounts describe the chapter implementing the art of replicae [[Corax]] attempted to bolster their dwindling replace his numbers in order and return to return combat readiness as quickly as possible to combat readiness. Due to the secretive nature of the Raven Guard chapter, little is known of the success of the chapter's attempt at cloning, however many rumours circulate in the ranks of other chapters describing the outbreak of [[mutants]].^{{Fn|2}}{{Fn|3}} *In [[M41]], in the wake of the disastrous [[Arkio]] Insurrection, [[Apothecary Majoris]] [[Caecus]] of the [[Blood Angels]] proposed using replication. Commander [[Dante]] disapproved, but Caecus continued his research in secret. Caecus believed he had succeeded with the aid of a mysterious [[Magos Biologis]], but his creations, the [[Bloodfiend]]s, though at first promising, turned into bloodthirsty monsters, manifesting extreme versions of the Blood Angels' geneseed flaws, the [[Black Rage]] and the [[Red Thirst]]. It is uncertain how much of this catastrophe was accident caused by Caecus's incomplete knowledge, and how much was deliberately engineered by the Magos (who turned out to be the traitor [[Fabius Bile]] in disguise).{{Fn|1}}

== See also ==* [[ApothecaryEnhanced Warriors]] Majoris Caecus of the [[Blood Angels]]: Also due to heavy losses, inflicted during the Arkio Insurrection, the Blood Angels sort to find a means to bolster their numbers, before their enemies caught wind of their weakened state. One such method was the art of replicae. This was carried out by Majoris Caecus against the will of Lord [[Dante]]. It is not entirely sure whether it was the flawed procedures used by the Apothecary and his cohorts or the manipulation of the traitor Fabius Bile that led to the extreme mutations which their creations suffered. The replicaes, at first glance, were identical to any other battle brother, but because of the extreme nature of the gene-flaws present inside them, they grew a [[Red_Thirst|lust for blood]]. With its consumption the "bloodchilds" mutated and evolved into more sinister beings. This attempt at replicae almost led to the Fortress Monastery of the Blood Angels almost becoming overrun by these "bloodfiends".¹

*^{{Endn|1}}:[[Red_Fury_Red Fury (Novel)|Red Fury]] by [[James Swallow]], {{Cite This}}*^{{Endn|2}}:[[Index Astartes IV]], {{Cite This}}*{{Endn|3}}: [[Deliverance Lost (Novel)]] by [[Gav Thorpe]], {{Cite This}}