diff --git a/code/__DEFINES/traits.dm b/code/__DEFINES/traits.dm
index 05fbfb7fe6..e8d6e756ec 100644
--- a/code/__DEFINES/traits.dm
+++ b/code/__DEFINES/traits.dm
@@ -81,6 +81,7 @@
 #define TRAIT_PUSHIMMUNE		"push_immunity"
 #define TRAIT_SHOCKIMMUNE		"shock_immunity"
 #define TRAIT_STABLEHEART		"stable_heart"
+#define TRAIT_STABLELIVER		"stable_liver"
 #define TRAIT_RESISTHEAT		"resist_heat"
 #define TRAIT_RESISTHEATHANDS	"resist_heat_handsonly" //For when you want to be able to touch hot things, but still want fire to be an issue.
 #define TRAIT_RESISTCOLD		"resist_cold"
@@ -182,6 +183,7 @@
 
 // unique trait sources, still defines
 #define STATUE_MUTE "statue"
+#define CLONING_POD_TRAIT "cloning-pod"
 #define CHANGELING_DRAIN "drain"
 #define CHANGELING_HIVEMIND_MUTE "ling_mute"
 #define ABYSSAL_GAZE_BLIND "abyssal_gaze"
diff --git a/code/game/machinery/cloning.dm b/code/game/machinery/cloning.dm
index a175558f74..d6bc859cb6 100644
--- a/code/game/machinery/cloning.dm
+++ b/code/game/machinery/cloning.dm
@@ -175,11 +175,12 @@
 
 	//Get the clone body ready
 	maim_clone(H)
-	ADD_TRAIT(H, TRAIT_STABLEHEART, "cloning")
-	ADD_TRAIT(H, TRAIT_EMOTEMUTE, "cloning")
-	ADD_TRAIT(H, TRAIT_MUTE, "cloning")
-	ADD_TRAIT(H, TRAIT_NOBREATH, "cloning")
-	ADD_TRAIT(H, TRAIT_NOCRITDAMAGE, "cloning")
+	ADD_TRAIT(H, TRAIT_STABLEHEART, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_STABLELIVER, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_EMOTEMUTE, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_MUTE, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_NOBREATH, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_NOCRITDAMAGE, CLONING_POD_TRAIT)
 	H.Unconscious(80)
 
 	clonemind.transfer_to(H)
@@ -355,12 +356,22 @@
 
 	if(!mob_occupant)
 		return
+<<<<<<< HEAD
 
 	REMOVE_TRAIT(mob_occupant, TRAIT_STABLEHEART, "cloning")
 	REMOVE_TRAIT(mob_occupant, TRAIT_EMOTEMUTE, "cloning")
 	REMOVE_TRAIT(mob_occupant, TRAIT_MUTE, "cloning")
 	REMOVE_TRAIT(mob_occupant, TRAIT_NOCRITDAMAGE, "cloning")
 	REMOVE_TRAIT(mob_occupant, TRAIT_NOBREATH, "cloning")
+=======
+	current_insurance = null
+	REMOVE_TRAIT(mob_occupant, TRAIT_STABLEHEART, CLONING_POD_TRAIT)
+	REMOVE_TRAIT(mob_occupant, TRAIT_STABLELIVER, CLONING_POD_TRAIT)
+	REMOVE_TRAIT(mob_occupant, TRAIT_EMOTEMUTE, CLONING_POD_TRAIT)
+	REMOVE_TRAIT(mob_occupant, TRAIT_MUTE, CLONING_POD_TRAIT)
+	REMOVE_TRAIT(mob_occupant, TRAIT_NOCRITDAMAGE, CLONING_POD_TRAIT)
+	REMOVE_TRAIT(mob_occupant, TRAIT_NOBREATH, CLONING_POD_TRAIT)
+>>>>>>> 5c41cc6f52... Muscled Veins experimental surgery (#44481)
 
 	if(grab_ghost_when == CLONER_MATURE_CLONE)
 		mob_occupant.grab_ghost()
diff --git a/code/game/machinery/exp_cloner.dm b/code/game/machinery/exp_cloner.dm
index e8364d2271..4d6853f8a1 100644
--- a/code/game/machinery/exp_cloner.dm
+++ b/code/game/machinery/exp_cloner.dm
@@ -42,11 +42,12 @@
 	icon_state = "pod_1"
 	//Get the clone body ready
 	maim_clone(H)
-	ADD_TRAIT(H, TRAIT_STABLEHEART, "cloning")
-	ADD_TRAIT(H, TRAIT_EMOTEMUTE, "cloning")
-	ADD_TRAIT(H, TRAIT_MUTE, "cloning")
-	ADD_TRAIT(H, TRAIT_NOBREATH, "cloning")
-	ADD_TRAIT(H, TRAIT_NOCRITDAMAGE, "cloning")
+	ADD_TRAIT(H, TRAIT_STABLEHEART, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_STABLELIVER, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_EMOTEMUTE, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_MUTE, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_NOBREATH, CLONING_POD_TRAIT)
+	ADD_TRAIT(H, TRAIT_NOCRITDAMAGE, CLONING_POD_TRAIT)
 	H.Unconscious(80)
 
 	var/list/candidates = pollCandidatesForMob("Do you want to play as [clonename]'s defective clone?", null, null, null, 100, H)
diff --git a/code/modules/mob/living/carbon/life.dm b/code/modules/mob/living/carbon/life.dm
index 7a3405cc09..6289a17309 100644
--- a/code/modules/mob/living/carbon/life.dm
+++ b/code/modules/mob/living/carbon/life.dm
@@ -671,7 +671,7 @@ GLOBAL_LIST_INIT(ballmer_windows_me_msg, list("Yo man, what if, we like, uh, put
 /mob/living/carbon/proc/liver_failure()
 	reagents.end_metabolization(src, keep_liverless = TRUE) //Stops trait-based effects on reagents, to prevent permanent buffs
 	reagents.metabolize(src, can_overdose=FALSE, liverless = TRUE)
-	if(HAS_TRAIT(src, TRAIT_STABLEHEART))
+	if(HAS_TRAIT(src, TRAIT_STABLELIVER))
 		return
 	adjustToxLoss(4, TRUE,  TRUE)
 	if(prob(30))
diff --git a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
index 4dc0d145dc..5adb61c464 100644
--- a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
@@ -1287,10 +1287,12 @@
 
 /datum/reagent/medicine/corazone/on_mob_metabolize(mob/living/M)
 	..()
-	ADD_TRAIT(M, TRAIT_STABLEHEART, id)
+	ADD_TRAIT(M, TRAIT_STABLEHEART, type)
+	ADD_TRAIT(M, TRAIT_STABLELIVER, type)
 
 /datum/reagent/medicine/corazone/on_mob_end_metabolize(mob/living/M)
-	REMOVE_TRAIT(M, TRAIT_STABLEHEART, id)
+	REMOVE_TRAIT(M, TRAIT_STABLEHEART, type)
+	REMOVE_TRAIT(M, TRAIT_STABLELIVER, type)
 	..()
 
 /datum/reagent/medicine/muscle_stimulant
diff --git a/code/modules/research/designs/medical_designs.dm b/code/modules/research/designs/medical_designs.dm
index c53ba430e0..86b457d3fa 100644
--- a/code/modules/research/designs/medical_designs.dm
+++ b/code/modules/research/designs/medical_designs.dm
@@ -811,6 +811,13 @@
 	surgery = /datum/surgery/advanced/bioware/vein_threading
 	research_icon_state = "surgery_chest"
 
+/datum/design/surgery/muscled_veins
+	name = "Vein Muscle Membrane"
+	desc = "A surgical procedure which adds a muscled membrane to blood vessels, allowing them to pump blood without a heart."
+	id = "surgery_muscled_veins"
+	surgery = /datum/surgery/advanced/bioware/muscled_veins
+	research_icon_state = "surgery_chest"
+
 /datum/design/surgery/ligament_hook
 	name = "Ligament Hook"
 	desc = "A surgical procedure which reshapes the connections between torso and limbs, making it so limbs can be attached manually if severed. \
diff --git a/code/modules/research/techweb/all_nodes.dm b/code/modules/research/techweb/all_nodes.dm
index cb5112353e..e4aeeda90f 100644
--- a/code/modules/research/techweb/all_nodes.dm
+++ b/code/modules/research/techweb/all_nodes.dm
@@ -124,7 +124,7 @@
 	display_name = "Experimental Surgery"
 	description = "When evolution isn't fast enough."
 	prereq_ids = list("adv_surgery")
-	design_ids = list("surgery_revival","surgery_pacify","surgery_vein_thread","surgery_nerve_splice","surgery_nerve_ground","surgery_ligament_hook","surgery_ligament_reinforcement","surgery_viral_bond", "surgery_exp_dissection")
+	design_ids = list("surgery_revival","surgery_pacify","surgery_vein_thread","surgery_muscled_veins","surgery_nerve_splice","surgery_nerve_ground","surgery_ligament_hook","surgery_ligament_reinforcement","surgery_viral_bond", "surgery_exp_dissection")
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 5000)
 	export_price = 5000
 
diff --git a/code/modules/surgery/advanced/bioware/muscled_veins.dm b/code/modules/surgery/advanced/bioware/muscled_veins.dm
new file mode 100644
index 0000000000..592a02b8d1
--- /dev/null
+++ b/code/modules/surgery/advanced/bioware/muscled_veins.dm
@@ -0,0 +1,42 @@
+/datum/surgery/advanced/bioware/muscled_veins
+	name = "Vein Muscle Membrane"
+	desc = "A surgical procedure which adds a muscled membrane to blood vessels, allowing them to pump blood without a heart."
+	steps = list(/datum/surgery_step/incise,
+				/datum/surgery_step/retract_skin,
+				/datum/surgery_step/clamp_bleeders,
+				/datum/surgery_step/incise,
+				/datum/surgery_step/incise,
+				/datum/surgery_step/thread_veins,
+				/datum/surgery_step/close)
+	possible_locs = list(BODY_ZONE_CHEST)
+	bioware_target = BIOWARE_CIRCULATION
+
+/datum/surgery_step/muscled_veins
+	name = "shape vein muscles"
+	accept_hand = TRUE
+	time = 125
+
+/datum/surgery_step/muscled_veins/preop(mob/user, mob/living/carbon/target, target_zone, obj/item/tool, datum/surgery/surgery)
+	display_results(user, target, "<span class='notice'>You start wrapping muscles around [target]'s circulatory system.</span>",
+		"[user] starts wrapping muscles around [target]'s circulatory system.",
+		"[user] starts manipulating [target]'s circulatory system.")
+
+/datum/surgery_step/muscled_veins/success(mob/user, mob/living/carbon/target, target_zone, obj/item/tool, datum/surgery/surgery)
+	display_results(user, target, "<span class='notice'>You reshape [target]'s circulatory system, adding a muscled membrane!</span>",
+		"[user] reshapes [target]'s circulatory system, adding a muscled membrane!",
+		"[user] finishes manipulating [target]'s circulatory system.")
+	new /datum/bioware/muscled_veins(target)
+	return TRUE
+
+/datum/bioware/muscled_veins
+	name = "Threaded Veins"
+	desc = "The circulatory system is woven into a mesh, severely reducing the amount of blood lost from wounds."
+	mod_type = BIOWARE_CIRCULATION
+
+/datum/bioware/muscled_veins/on_gain()
+	..()
+	ADD_TRAIT(owner, TRAIT_STABLEHEART, "muscled_veins")
+
+/datum/bioware/muscled_veins/on_lose()
+	..()
+	REMOVE_TRAIT(owner, TRAIT_STABLEHEART, "muscled_veins")
\ No newline at end of file
diff --git a/tgstation.dme b/tgstation.dme
index 638e35da5d..82841f486c 100755
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -2777,6 +2777,7 @@
 #include "code\modules\surgery\advanced\bioware\bioware_surgery.dm"
 #include "code\modules\surgery\advanced\bioware\ligament_hook.dm"
 #include "code\modules\surgery\advanced\bioware\ligament_reinforcement.dm"
+#include "code\modules\surgery\advanced\bioware\muscled_veins.dm"
 #include "code\modules\surgery\advanced\bioware\nerve_grounding.dm"
 #include "code\modules\surgery\advanced\bioware\nerve_splicing.dm"
 #include "code\modules\surgery\advanced\bioware\vein_threading.dm"