Changes

{{SpaceMarinesPortal}}

[[File:SManatomy.jpg|thumb|right|300px|Anatomy of a Space Marine{{Fn|5}}]]

Recruits must be fairly young, because implants often do not become fully functional if the recipient has reached a certain level of physical maturity. They must be male because the geneseed zygotes are keyed to male hormones and genetic structure. Only a small percentage of people are compatible with the implants and hypno-suggestion necessary to turn them into Marines. Before the process of implantation begins, the potential recruit receives tissue compatibility tests and psychological screening. If the testing proves successful, the recruit becomes an [[aspirant]]. After the organ implantation process begins, he becomes a [[neophyte]]. When the final implant is in place and the requisite training and hypnotherapy complete, he becomes a full [[brother]].{{Fn|1}}{{Fn|2a}}{{Fn|3}}

===Selection===

'''Phase 5:''' A liver-shaped organ about the size of a golf-ball, this implant is placed within the chest cavity and connected to the circulatory system. It generates and controls 'Larraman cells', which are released into the blood stream if the recipient is wounded. They attach themselves to leukocytes (white blood cells) in the blood and are carried to the site of the wound, whereupon contact with air they form a near instant patch of scar tissue, sealing any wounds the Space Marine may suffer - acting like platelets, only better.{{Fn|1}}{{Fn|2a}}{{Fn|3}}

'''Phase 6:''' Implanted into the back of the brain, this pea-sized organ influences the circadian rhythms of sleep and the body's response to sleep deprivation. If deprived of sleep, the catalepsean node cuts in. The node allows a Marine to sleep and remain awake at the same time by switching off areas of his brain sequentially. This process cannot replace sleep entirely, but increases the Marine's survivability by allowing perception of the environment while resting{{Fn|1}}{{Fn|2a}}{{Fn|3}}. This means that a Space Marine needs no more than 4 hours of sleep a day, and can potentially go for 2 weeks without any sleep at all.{{Fn|1}}{{Fn|2a}}{{Fn|3}}

'''Phase 7:''' This is essentially a pre-stomach that can neutralise otherwise poisonous or indigestible foods. No actual digestion takes place in the preomnor, as it acts as a decontamination chamber placed before the natural stomach in the body's system and can be isolated from the rest of the digestive tract in order to contain particularly troublesome intake.{{Fn|1}}{{Fn|2a}}{{Fn|3}}

*Known mutations:

**The preomnor of the [[Mantis Warriors]] will react to a mindset of sufficient penance and piety by releasing a potent neurotoxin which permanently alters the Marine, radically increasing reaction time and strength and inducing permanent tunnel vision.{{CME}}

'''Phase 8:''' This implant, also called ''"the Remembrancer"'', allows a Space Marine to 'learn by eating'. It is situated in the spinal cord but is actually part of the brain. Four nerve bundles are implanted connecting the spine and the stomach wall. Able to 'read' or absorb genetic material consumed by the marine, the omophagea transmits the gained information to the Marine's brain as a set of memories or experiences. It is the presence of this organ which has led to the various flesh-eating and blood-drinking rituals for which the Astartes are famous, as well as giving names to chapters such as the [[Blood Drinkers]] and [[Flesh Tearers]]. Over time, mutations in this implant have given some chapters unnatural cravings for blood or flesh.{{Fn|1}}{{Fn|2a}}{{Fn|3}}{{Fn|6}}

*Known mutations:

===Multi-lung===