There are two known forms, an X-linked SCID in Basset Hounds that has similar ontology to X-SCID in humans and an autosomal recessive form seen in one line of Jack Russell Terriers that is similar to SCID in Arabian horses and mice.SCID mice also serve as a useful animal model in the study of the human immune system and its interactions with disease, infections, and cancer. For example, normal strains of mice can be lethally irradiated, killing all rapidly dividing cells. These mice then receive bone marrow transplantation from SCID donors, allowing engraftment of human peripheral blood mononuclear cells (PBMC) to occur. This method can be used to study whether T cell-lacking mice can perform hematopoiesis after receiving human PBMC. See also
David Vetter
Aisha Chaudhary
List of cutaneous conditions
List of radiographic findings associated with cutaneous conditions

References
Further reading
Buckley RH (2004). "Molecular defects in human severe combined immunodeficiency and approaches to immune reconstitution". Annu Rev Immunol. 22: 625–55. doi:10.1146/annurev.immunol.22.012703.104614. PMID 15032591. Chinen J, Puck JM (2004). "Successes and risks of gene therapy in primary immunodeficiencies". J Allergy Clin Immunol. 113 (4): 595–603, quiz 604. doi:10.1016/j.jaci.2004.01.765. PMID 15100660. Church AC (2002). "X-linked severe combined immunodeficiency". Hosp Med. 63 (11): 676–80. doi:10.12968/hosp.2002.63.11.1914. PMID 12474613. Gennery AR, Cant AJ (2001). "Diagnosis of severe combined immunodeficiency". J Clin Pathol. 54 (3): 191–5. doi:10.1136/jcp.54.3.191. PMC 1731376. PMID 11253129. External links
Learning About Severe Combined Immunodeficiency (SCID) NIH
This does not necessarily mean that the woman or fetuss health is being compromised, but it is painful and is an important indication for doctors to pay attention to warning signs of prolonged labor. Prolonged active labor
The phase of labor that extends into multiple hours (at least 14). The cervix usually dilates to over 4 cm before active labor occurs. When it first begins, it is encouraged that women stand up, walk around, and eat or drink. If failure to progress extends beyond this point, preventive measures need to be taken. Causes
Fetal malpresentations
Fetal malpresentations are irregular positions of the crown of the fetal head in relation to the mothers pelvis (the fetus is in an abnormal position). Some important ways to manage fetal malpresentation are making rapid evaluations of the condition of the women pertaining to vital signs as well as the heart rate of the fetus. If fetal heart rate is abnormal, and if membranes have ruptured and amniotic fluid is atypical, it is important for medical professionals to determine the presenting part of the fetus and the position of the fetal head. Possible delivery methods, if this is the case, are compound presentation, vaginal breech delivery, or caesarean section for breech presentation depending upon the severity of the malposition. Uterine contractions
This refers to uterine conditions that result in the uterus not having enough coordination or strength to dilate the cervix and push the baby through the birth canal. Issues with uterine contractions are the main cause of prolonged labor during the latent phase.