RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
40 results for "heart transplant" — page 2 of 2
Z_5_11 — Microbiome-Host Coevolution: Holobiont Theory, Gut Ecology, and Metabolic Symbiosis
Microbiome-host coevolution refers to the deep, reciprocal evolutionary relationship between multicellular organisms and the complex microbial communities (bacteria, archaea, fungi, viruses) that inhabit their bodies — p
Z_2_11 — Genetics of Immunity and MHC Diversity
The major histocompatibility complex (MHC) — known as the human leukocyte antigen (HLA) system in humans — is the most polymorphic gene region in the human genome, encoding cell-surface glycoproteins essential for adapti
Z_2_01 — HLA System & Archaic Immune Inheritance
The Human Leukocyte Antigen (HLA) system is the most polymorphic region of the human genome, encoding cell-surface proteins critical to adaptive immune function. Located on chromosome 6p21.3, the Major Histocompatibility
K_4_07 — Biofield Science — Electromagnetic and Subtle Energy Research
Biofield science investigates the electromagnetic, acoustic, and hypothesized "subtle energy" fields associated with living organisms, spanning a spectrum from rigorous biophysics to highly contested alternative medicine
K_5_12 — Interoception: Body Signals and Conscious Experience
Interoception — the perception of the internal physiological state of the body — encompasses the sensing and central processing of signals from the heart (cardiac rhythm, blood pressure), lungs (breathing), gut (satiety,
ZB_2_20 — Human Microbiome & Dysbiosis
The human microbiome — the collective genome of the ~38 trillion microorganisms (bacteria, archaea, fungi, viruses) inhabiting the human body — represents a second genome interacting with host physiology in ways that are
ZB_2_09 — Biological Regeneration: Limb Regrowth and Tissue Repair
The ability to regenerate lost body parts varies enormously across the animal kingdom. Planarian flatworms can rebuild an entire organism from a fragment 1/279th of the original. Salamanders regenerate complete limbs, ja
ZB_5_03 — Microbiome Ecology
The microbiome — the collective genomes of the trillions of microorganisms (bacteria, archaea, fungi, viruses) inhabiting a host organism or environment — has emerged as one of the most transformative research areas in 2
ZB_5_27 — Human Microbiome: Gut-Brain Axis and Microbial Ecology
The human body hosts approximately 38 trillion microbial cells — roughly equal to the number of human cells — comprising ~3,000 species of bacteria, archaea, fungi, and viruses, collectively termed the microbiome. The Hu
B_5_15 — Popol Vuh: K'iche' Maya Creation Narrative and Supernatural Beings
The Popol Vuh is the principal mythological and cosmogonic text of the K'iche' Maya, preserved in a colonial-era transcription completed around 1554–1558 CE and first recorded in Latin script by Francisco Ximénez circa 1
L_3_09 — HLA Diversity and Immune System Evolution
The Human Leukocyte Antigen (HLA) system — the human version of the Major Histocompatibility Complex (MHC) found in all jawed vertebrates — is the most polymorphic gene region in the entire human genome. Located on chrom
L_5_01 — Human Microbiome and Co-Evolution
The human microbiome — the aggregate community of microorganisms (bacteria, archaea, fungi, viruses, protists) living on and within the human body — comprises roughly 38 trillion microbial cells (Sender et al., 2016, Cel
Y_3_11 — Biofeedback and Neurofeedback
Biofeedback is the process of using real-time monitoring of physiological signals — heart rate, muscle tension, skin conductance, brainwave patterns — to train voluntary control over processes normally considered involun
P_4_14 — Maat and Ancient Egyptian Philosophy: Order, Truth, and Justice
Maat (also Ma'at) is the ancient Egyptian concept of cosmic order, truth, justice, balance, and righteous conduct that governed the universe, society, and individual ethics for over three millennia — from the Old Kingdom
P_1_06 — Personal Identity and Continuity
Personal identity — the question of what makes you you over time, and under what conditions you would cease to exist — is one of philosophy's most ancient and practically urgent problems. The core puzzle is persistence:
ZE_3_02 — Bioethics and Medical Ethics
Bioethics — the systematic study of ethical issues arising from biological sciences and medicine — emerged as a formal discipline in the 1960s–70s in response to rapid medical advances (organ transplantation, intensive c
R_5_08 — Human Microbiome: Gut Ecology and Symbiotic Partnerships
The human microbiome — the vast community of trillions of microorganisms (bacteria, archaea, fungi, viruses) that inhabit the human body, primarily the gastrointestinal tract — is now recognized as a critical organ-like
S_5_09 — Wearable Technology: Biosensors, Continuous Monitoring, and Digital Health
Wearable technology — electronic devices worn on the body that continuously collect physiological, activity, and environmental data — has evolved from simple pedometers into sophisticated health-monitoring platforms worn
S_2_06 — Regenerative Medicine and Bioprinting
Regenerative medicine aims to repair, replace, or regenerate damaged tissues and organs using biological approaches — tissue engineering, stem cell therapy, bioprinting, and xenotransplantation. The organ shortage crisis
ZA_3_03 — Nuclear Physics: Fission, Fusion, and the Heart of Matter
Nuclear physics studies the atomic nucleus — the dense core of protons and neutrons bound by the strong nuclear force, containing 99.95% of an atom's mass in just 10⁻¹⁵ meters. The field revealed that mass can be convert
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