Do all creatures possess an acquired immune system of some sort?

CRISPR-Mediated Adaptive Immune Systems in Bacteria and Archaea

(2013) Rotem Sorek et al.   Annual Review of Biochemistry

Autoantibody repertoires, natural biomarkers, and system controllers

(2013) Irun R. Cohen   TRENDS IN IMMUNOLOGY

Fifty Shades of Immune Defense

(2013) Michael F. Criscitiello et al.   PLoS Pathogens

The CRISPRs, They Are A-Changin': How Prokaryotes Generate Adaptive Immunity

(2012) Edze R. Westra et al.   Annual Review of Genetics

RNA-guided genetic silencing systems in bacteria and archaea

(2012) Blake Wiedenheft et al.   NATURE

Mobile CRISPR/Cas-Mediated Bacteriophage Resistance in Lactococcus lactis

(2012) Anne M. Millen et al.   PLoS One

Transgenerational defense induction and epigenetic inheritance in plants

(2012) Liza M. Holeski et al.   TRENDS IN ECOLOGY & EVOLUTION

Invariant natural killer T cells as sensors and managers of inflammation

(2012) Luc Van Kaer et al.   TRENDS IN IMMUNOLOGY

Spatial Structure and Lamarckian Adaptation Explain Extreme Genetic Diversity at CRISPR Locus

(2012) J. O. Haerter et al.   mBio

Transgenerational Inheritance of an Acquired Small RNA-Based Antiviral Response in C. elegans

(2011) Oded Rechavi et al.   CELL

Alternative splicing of the Anopheles gambiae Dscam gene in diverse Plasmodium falciparum infections

(2011) Paul H Smith et al.   MALARIA JOURNAL

Timing of plant immune responses by a central circadian regulator

(2011) Wei Wang et al.   NATURE

Human nutrition, the gut microbiome and the immune system

(2011) Andrew L. Kau et al.   NATURE

The good viruses: viral mutualistic symbioses

(2011) Marilyn J. Roossinck   NATURE REVIEWS MICROBIOLOGY

A role for variable region-containing chitin-binding proteins (VCBPs) in host gut-bacteria interactions

(2011) L. J. Dishaw et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Chromatin modification acts as a memory for systemic acquired resistance in the plant stress response

(2010) Michal Jaskiewicz et al.   EMBO REPORTS

The basis for haplotype complexity in VCBPs, an immune-type receptor in amphioxus

(2010) Larry J. Dishaw et al.   IMMUNOGENETICS

Understanding the vertebrate immune system: insights from the reptilian perspective

(2010) L. M. Zimmerman et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Self versus non-self discrimination during CRISPR RNA-directed immunity

(2010) Luciano A. Marraffini et al.   NATURE

CRISPR interference: RNA-directed adaptive immunity in bacteria and archaea

(2010) Luciano A. Marraffini et al.   NATURE REVIEWS GENETICS

How pathogens drive genetic diversity: MHC, mechanisms and misunderstandings

(2010) L. G. Spurgin et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Hemocyte Differentiation Mediates Innate Immune Memory in Anopheles gambiae Mosquitoes

(2010) Janneth Rodrigues et al.   SCIENCE

Increased Mutagenesis and Unique Mutation Signature Associated with Mitotic Gene Conversion

(2010) W. M. Hicks et al.   SCIENCE

CRISPR/Cas, the Immune System of Bacteria and Archaea

(2010) P. Horvath et al.   SCIENCE

Self-targeting by CRISPR: gene regulation or autoimmunity?

(2010) Adi Stern et al.   TRENDS IN GENETICS

Is evolution Darwinian or/and Lamarckian?

(2009) Eugene V Koonin et al.   Biology Direct

The role of RNAi and microRNAs in animal virus replication and antiviral immunity

(2009) J. L. Umbach et al.   GENES & DEVELOPMENT

Dual nature of the adaptive immune system in lampreys

(2009) Peng Guo et al.   NATURE

Origin and evolution of the adaptive immune system: genetic events and selective pressures

(2009) Martin F. Flajnik et al.   NATURE REVIEWS GENETICS

PERSPECTIVE: Principles of ecological immunology

(2008) Ben M. Sadd et al.   Evolutionary Applications

RNA-based viral immunity initiated by the Dicer family of host immune receptors

(2008) Roghiyh Aliyari et al.   IMMUNOLOGICAL REVIEWS

Parasite immune evasion: a momentous molecular war

(2008) P SCHMIDHEMPEL   TRENDS IN ECOLOGY & EVOLUTION